Does Mr. McConaughey’s marginal utility from spending time with family and friends and from breaking a sweat obey the principle of diminishing marginal utility?

A) No, neither obeys the principle of diminishing marginal utility.
B) Only breaking a sweat obeys the principle of diminishing marginal utility.
C) Yes, they both obey the principle of diminishing marginal utility.
D) Only spending time with friends and family obeys the principle of diminishing marginal utility.