GMAT Critical Reasoning (CR) | Re: Hotel bookings in Miami are only done through travel

Hi expert,
How to rule out option B? Using a simple math,we can deduce that Miami@50 accounts for 64,000 hotel room night bookings.This figure could fill in the missing 50,000 bookings as mentioned by the hotel owner.

Is it because that the decrease in number of bookings cited by the hotel owners includes the number of bookings from Miami@50 as well?

Thanks.