Tova’s utility function is u(c1, c2) = min{c1, c2}, where c1 is his consumption in period 1 and c2 is his consumption in period 2. He earns $200 in period 1 and $220 in period 2. Tova can borrow and lend at an interest rate of 10 percent, and there is no inflation. The number of dollars that Tova spends on consumption in the first period must be单项选择题

A

more than 200 but less than 220.

B

exactly 200.

C

more than 220.

D

exactly 180.

E

more than 180 but less than 200.

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