Answer:
Option (C) is correct.
Explanation:
MUc = marginal utility obtained from product C
MUd = marginal utility obtained from product D
Pc = Price of product C
Pd = Price of product D
Therefore, a consumer will maximize his total utility at a point where the marginal utility per dollar from product C and marginal utility per dollar from product D are equal.
It is shown as follows:
[tex]\frac{MUc}{Pc}=\frac{MUd}{Pd}[/tex]
The consumer is spending more on product C and less on product D if the marginal utility per dollar of product C is greater than the marginal utility per dollar of product D.