Mr. Tang owns a condo in Richardson, TX and is negotiating a potential lease with an international student Gihyun who will visit UT Dallas for a year. Mr. Tang's current tenant agrees to renew the lease for another year for a total rent of $31,200. No cleaning is needed if the lease is to be renewed. If Mr. Tang leases the condo to a new tenant, he needs to spend $900 for a thorough cleaning. Gihyun has the option to stay in a University lodging facility for $47,000 for the year which includes meals and is on campus. If she leases Mr. Tang's condo, she estimates that she needs to spend an extra $13,000 on meals and $700 on transportation for the year. Of the following annual rents: $31,000, $32,000, $33,000, $34,000, $35,000, $36,000, How many of them are acceptable to both Mr. Tang and Gihyun?

a. 0

b. 1

c. 2

d. 3

e. 4

f. 5

g. 6