Recently, a city-based pizza dine-in cum delivery outlet used an unman

Can we get some more responses with reasoning before I post OA. Kudos for the correct explanation.

Hi

Hope to see some responses. Kudos for those who post the correct reasoning along with right answer.

Please note: This is a self made question.

Recently, a city-based pizza dine-in cum delivery outlet used an unmanned drone to execute a delivery by taking the aerial route. In an interview, the owner of the outlet said “Since Shenchen is a city that is largely plagued with heavy traffic congestion, aerial drones is the only way to increase revenue in a business, such as ours, that promises to deliver pizzas within thirty minutes”.

Which of the following statements, if true, most strengthens the owner’s argument?
A. The revenue has been steadily declining for the outlet for the past few years.
B. The drones are extremely cost efficient and test results show that cost per delivery using a drone is significantly less than cost per delivery in the current model that is used by the outlet.
C. Citizens of the city prefer a cash-on-delivery system where bills are paid in cash once the customers receive their delivery.
D. Continuous rainfall, that has an adverse impact on heavy aircrafts, is rare in Shenchen.
E. The customers of the outlet do not prefer dining at the outlet since its neighboring area is plagued with heavy traffic congestion.