Ten individuals have $100 and identical preferences for picnics, p, an

Ten individuals have $100 and identical preferences for picnics, p, and kayak trips, k, where U(p, k) = k0.5p0.5. The price of picnics is $5 and the price per kayak trip is $ 10. What is the shortage/surplus in the market when the supply of picnics totals 120?

A) There is a surplus of 20.
B) There is a shortage of 20.
C) The market is in equilibrium. Therefore, there is no surplus/shortage.
D) There is not enough information to answer this question.

ANSWER

A