A popular Internet service provider changed its billing system, chargi

Hi,

I'm not able to get the following question. Though I couldn't find the answers for sure when I searched online for an answer, some people do think that the answer should be A. I had chosen C. Could someone please explain why/why not & what the correct answer is. Thanks in advance.
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A popular Internet service provider changed its billing system, charging customers per each connection to the system rather than per total hours connected. According to company representatives, under the new system, customers will spend more time connected to the Internet while being billed the same or smaller amounts.

Which one of the following statements, if true, would most strengthen the conclusion of the company representatives?

(A) Customers will connect to the service less frequently and spend more time connected to the service each time they do.
(B) The change in the billing system will attract new customers resulting in increased profits for the company.
(C) By spending more time connected to the Internet customers will be able to take advantage of services that previously would have been too expensive.
(D) The popularity of other Internet service providers relies on their having billing systems similar to the one this company is adopting.
(E) The company’s employees, all of whom have free unlimited Internet access, support the change in billing.

My logic:
(A) Customers will connect to the service less frequently and spend more time connected to the service each time they do.
[Me]: May be "connecting the service less frequently" means since people would have unlimited service available for a fixed charge, they wouldnt disconnect and hence would connect less frequently, so, just keep it for once
(B) The change in the billing system will attract new customers resulting in increased profits for the company.
[Me]: Company profit in not the question here, so, irrelevant
(C) By spending more time connected to the Internet customers will be able to take advantage of services that previously would have been too expensive.
[Me]: This sounds good because if users keep using the service for longer than usual, there wouldn't be any extra changes which might've been the case earlier
(D) The popularity of other Internet service providers relies on their having billing systems similar to the one this company is adopting.
[Me]: Irrelevant
(E) The company’s employees, all of whom have free unlimited Internet access, support the change in billing.
[Me]: Irrelevant

The source is PiyushT