Match the following and choose the correct combination from the options given.
`{:(,"Column I",,,"Column II"),(a., "Potassium",,(i),"Germination of pollen grains"),(b.,"Molybdenum",,(ii),"Involved in synthesis of auxin"), (c., "Boron",,(iii), "Involved in protein synthesis"), (d.,"Zinc",,(iv),"Constituent of ferredoxin"),(e.,"Sulphur",,(v),"Component of nitrate reductase"):}`
A. a (iii), b(iv), c(ii), d(i), e(v)
B. a(iii), b(v), c(i), d(ii), e(iv)
C. a(i), b(ii), c(iii), d(iv), e (v)
D. a(ii), b(iii), c (v), d (i), e (iv)
