The Consumer's Income Is $800 $P _ { x } / P _ { x }$

The consumer's income is $800.
-According to the above figure,why doesn't the consumer choose the combination of 30X and 56Y at point A?

A) MRS is less than $P _ { x } / P _ { x }$ .
B) MRS is greater than $P _ { x } / P _ { y }$ .
C) $M U _ { x }$ is greater than $M U _ { y }$ .
D) $M U _ { x } / P _ { x }$ is less than $M U _ { \mathrm { r } } / P _ { \mathrm { r } }$ .