Which type of RV is MORE commonly rented?

I'm starting to wonder because not every fuel station with gas has diesel.

So, which type of RV is MORE commonly rented?

a) Ford E350/E450 or F53 gas
B) Mercedes Sprinter (with diesel engine)
C) both A and B
d) none of the above

When you answer, can you give me an explanation?

Maybe a Winnebago?

Diesel fuel should not be difficult to find, any truck stop has it and even a city gas station does a mile from my home.

It was not as easy to find diesel fuel back in the 1970's when our company used Mercedes 220D company cars, which were actually well made economy cars with manual steering, manual shift (4 on the floor), and little 2.2 L diesel (55 hp) moving a 3500 lb car. But they got 32 mpg city or hwy, so they could easily go 475 miles on a tank and I never ran out.