question_answer

Consider following structures

(I)

(II)

(III)

(IV)

Select correct statement(s)

A) I and II; I and IV; II and III, and III and IV are diastereomers

B) configurations of I, II, III and IV are respectively (S, R), (R, R), (R, S) and (S, S)

C) All have two stereocentres

D) All the above are correct statements