For Brent, if the marginal utility of sleeping an extra hour, from 8 a.m. to 9 a.m., is negative:
a. Brent is better off getting up at 8 a.m. or earlier
b. Brent is better off getting up at 9 a.m.
c. Brent's total utility from sleeping must be negative.
d. Brent's average utility from every hour he sleeps must be negative.
a
Economics