Assume MU_c and MU_d Represent the Marginal Utility That a Consumer

Assume MU_c and MU_d represent the marginal utility that a consumer gets from products C and D,the respective prices of which are P_c and P_d.The consumer will increase his total utility from a specific money outlay by spending more on C and less on D if initially:

A)
$$\mathrm { MU } _ { d } < \mathrm { MU } _ { c }$$
B)
$$\frac { \mathrm { MU } _ { c } } { P _ { c } } < \frac { \mathrm { MU } _ { d } } { P _ { c } }$$
C)
$$\frac { \mathrm { MU } _ { c } } { P _ { c } } > \frac { \mathrm { MU } _ { d } } { P _ { d } }$$
D)
$$\mathrm { MU } _ { d } > \mathrm { MU } _ { c }$$