The demand to attend a certain college is represented by a downward-sloping demand curve. The supply of spots at the college is represented by a vertical supply curve. At the tuition that students are charged, there is a shortage of spots at the college. If the demand to attend the college falls, but the tuition stays constant, if follow that the:
A. SAT score required to attend the college will probably not change.
B. GPA required to attend the college will probably fall
C. GPA required to attend the college will probably rise.
D. A and C.