Suppose that the price of a hamburger is $8 and the price of a sandwich rises from $4 to $8 with his income of $48. Which of the following will not occur? Mark can buy 8 sandwiches.
a) Mark can buy 5 sandwiches.
b) Mark can buy 6 sandwiches.
c) Mark can buy 7 sandwiches.
d) Mark can buy 8 sandwiches.