Gliberace's Fashion Accessories of Las Vegas produces gem-stone encrusted formal wear for sale in Los Angeles and San Francisco subject to total cost TC = 100 + 5(QLA + QSF). Demand for Gliberace's stones in the two cities is given by QLA = 70 - 2PLA and QSF = 55 - PSF. If Gliberace price discriminate between the two cities, how many stones will it sell in Los Angeles?
a. 30
b. 36
c. 38
d. 43
e. 48