John owns a clothing store that sells graphic t-shirts and shorts.
He sells the t-shirts for $6 each and the shorts for $14 each.
He is limited to the constraints show by the set of inequalities below.
Which of the points (s, t) will maximize John's profit?
A. (4, 16)
B. (12, 0)
C. (0, 20)
D. (0, 10)
