The Fischer projection of D-erythrose is shown below.

D-Erythrose and its isomers are listed as P, Q, R, and S in Column-I. Choose the correct relationship of P, Q, R, and S with D-erythrose from Column II.

A

P-2, Q-3, Q-2, Q-2

B

P-3, Q-1, Q-1, Q-2

C

P-2, Q-1, Q-1, Q-3

D

P-2, Q-3, Q-3, Q-1