Economist: Currently the interest rates that banks pay to borrow

The answer here is (A).

We need to pick an option, which if true, makes the conclusion follow.

Currently the interest rates that banks pay to borrow are higher than the interest rates that they can receive for loans to large, financially strong companies. Banks will not currently lend to companies that are not financially strong, and total lending by banks to small and medium-sized companies is less than it was five years ago. So total bank lending to companies is less than it was five years ago.

We need to make this follow: total bank lending to companies is less than it was five years ago.

We already know this: Currently, total lending by banks to small and medium-sized companies is less than what it was 5 years ago.
What about large companies? How do we know that banks are not lending much more to large companies now as compared with 5 years ago?

What does this statement tell us - Currently the interest rates that banks pay to borrow are higher than the interest rates that they can receive for loans to large, financially strong companies?
Does it say that banks are not lending to large companies? No. What do we need? Something that tells us that banks are lending less to large companies too.

Now if we add this info too: Banks will not lend money at interest rates that are lower than the interest rates they pay to borrow.

Now it makes sense that banks are not lending to large companies. Hence, we know that banks are not lending to large companies and are lending less than what they did 5 yrs ago to small and medium companies.

Then it stands to reason that they are lending less to companies than they were five years ago.

Can someone please explain why not B