Select the correct translation for each problem:

Amherst reduces class size, and either Williams increases enrollment or Smith raises.

a) Amherst decreases class size, and either Williams decreases enrollment or Smith increases.
b) Amherst increases class size, and either Williams increases enrollment or Smith decreases.
c) Amherst reduces class size, and either Williams increases enrollment or Smith raises.
d) Amherst increases class size, and either Williams decreases enrollment or Smith raises.