Match the column I with column II.
`{:("Column I", "Column II"),("External fertilisation", "(i) Earthworm"),("Internal fertilisation ", "(ii)Cockroach"),("Bisexual", "(iii) Frogs and Fishes"),("Unisexual", "(iv) Birds and mammals"):}`
A. P-(iv), Q-(iii), R-(i), S-(ii)
B. P-(iv), Q-(iii), R-(ii), S-(i)
C. P-(iii), Q-(iv), R-(ii), S-(i)
D. P-(iii), Q-(iv), R-(i), S-(ii)