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

      A    B    C   D

(1) (ii) (iii) (iv) (i)

(2) (iii) (iv) (i) (ii)

(3) (iv) (ii) (iii) (i)

(4) (iv) (iii) (ii) (i)