All of the following statements concerning drugs which inhibit cholesterol synthesis are true, EXCEPT:
a) When used alone, they are the most effective agents for lowering LDL cholesterol
b) They are often effective in patients in whom a diet, with or without a bile acid-binding resin or niacin, has failed
c) Lovastatin (Mevacor) plus a resin causes regression of coronary lesions in about one third of treated patients
d) Members of this drug class are generally not as well tolerated as the older bile acid-binding resins
