Suppose That a Consumer Has the Utility Function $\mathrm { U } = 5 \mathrm {~A} + 7 \mathrm {~B}$

Multiple Choice

Suppose that a consumer has the utility function $\mathrm { U } = 5 \mathrm {~A} + 7 \mathrm {~B}$ . If is measured on the horizontal axis, which of the following is correct?

A) The indifference curves will be L-shaped.
B) The indifference curves will be horizontal.
C) The indifference curves will be straight lines with slope $- 5 / 7$ .
D) The indifference curves will be straight lines with slope $- 7 / 5$ .