P, Q, R and S are four metals whose typical reactions are given below.
(I) Only Q and R react with dilute $$HCL$$ to give $$H_2$$ gas.
(II) When Q is added to a solution containing ions of the other metals, metallic P, R and S are formed.
(III) P reacts with concentrated $$HNO_3$$ but S does not.
The correct order of their reducing character is

A

$$S < P < R < Q$$

B

$$S < R < P < Q$$

C

$$R < Q < P < S$$

D

$$Q < P < S < R$$