Match the following columns:

Column I	Column II
a. M-9	1. Dwarfing root stock of apple
b. Alphonso	2. Export mango
c. M-27	3. Ultra dwarf root stock of apple
d. Dwarf cavendish	4. Export banana

A. a-2, b-3, c-1, d-4

B. a-3, b-4, c-2, d-1

C. a-4, b-3, c-2, d-1

D. a-1, b-2, c-3, d-4

Answer: Option D