The Tangency Condition for the Optimal Choice for a Consumer $\mathrm { MRS } _ { x , y } = P _ { y } / P _ { x }$

Multiple Choice

The tangency condition for the optimal choice for a consumer is given by:

A) $\mathrm { MRS } _ { x , y } = P _ { y } / P _ { x }$
B) $\mathrm { MU } _ { x } / \mathrm { MU } _ { y } = 1$
C) $\mathrm { MRS } _ { x , y } = P _ { x } / P _ { y }$
D) $\mathrm { MU } _ { x } / \mathrm { MU } _ { y } = P _ { y } / P _ { x }$