92.Statins是用來治療家族性高膽固醇血症（familial hypercholesterolemia）的常用藥物，這類藥物主要是藉由抑制那一種酵素活性，進而降低細胞內膽固醇的合成？
(A)β-hydroxy-β-methylglutaryl-CoA（HMG-CoA）synthase
(B)β-hydroxy-β-methylglutaryl-CoA（HMG-CoA）lyase
(C)β-hydroxy-β-methylglutaryl-CoA（HMG-CoA）reductase
(D)β-hydroxy-β-methylglutaryl-CoA（HMG-CoA）isomerase