Mike likes beer and fried chicken and views them as perfect complements: for each bottle of beer, he likes to eat 3 pieces of fried chicken. An excess beer that is not paired with 3 pieces of fried chicken gives him no utility, and an excess piece of fried chicken that is not paired with a third of a beer gives him no utility.

What is Mike's utility function for beer (B) and chicken (C)

a. U (B,C) = min {3B,C}

b. none of these

c. U (B,C) = square root 3B x C

d. U (B,C) = 3B + C

e. U (B,C) = max { 3B, C}