Match the columns and choose the correct combination :
`{:(," I",," II"),((a),"Cytokinin",(p),"Stress hormone"),((b),"Auxins",(q),"Ripening of fruits"),((c),"Abscisic acid",(r),"Apical dominance"),((d),"Ethylene",(s),"Bolting"),(,,(t),"Richmond-Lang Effect"):}`
A. a-t, b-r, c-p, d-q
B. a-t, b-r, c-p, d-s
C. a-r, b-s, c-q, d-p
D. a-q, b-s, c-t, d-r
