The amount of sales tax collected by a retail store when making sales is:

A. a miscellaneous revenue for the store.
B. a current liability.
C. not recorded because it is a tax paid by the customer.
D. recorded as an operating expense.

Afirm’s production function is represented by q(m,r) = 4m 3/4r1/3, where q denotes output, m raw materials, and r robots. the firm is currently using 6 units of raw materials and 12 robots. according to the mrts, in order to maintain its output level the firm would need to give up 2 robots if it adds 9 units of raw materials. (a) true (b) false