Match the following sexually transmitted diseases (Column - I) with their causative agent (Column - II) and select the correct option.

A

a - iv, b - ii, c - iii, d - i

B

a - iv, b - iii, c - ii, d - i

C

a - ii, b - iii, c - iv, d - i

D

a - iii, b - iv, c - i, d - ii