Table 2-A -Refer to Table 2-A

Multiple Choice

Table 2-A
$\begin{array} { c c c } \text { Possibility A } & \text { Econamics } & \text { History } \\\text { I } & 94 & 76 \\\text { II } & 87 & 84 \\\text { III } & 77 & 9 !\end{array}$
-Refer to Table 2-A.A student has only a few hours to prepare for two different exams this afternoon.The above table shows alternative possible exam scores with three alternative uses of the student's time.The opportunity cost of scoring a 94 on the economics exam rather than a 77 is:

A) 8 points on the history exam.
B) 15 points on the history exam.
C) 76 points on the history exam.
D) 91 points on the history exam.
E) zero.