Match the type of bacteria listed in column I with their activity given in column II. Choose the correct combination of alphabets of the two columns
`|{:(,underset("(Types of bacterial)")("Column-I"),,underset("(Activity)")("Column-II")),(A.,"Steptomyces",p.,"Food poisoning"),(B.,"Rhizobium",q.,"Source of antibiotics"),(C.,"Nitrosomonas",r.,"Nirogen fixation"),(D.,"Acetobacter",s.,"Nitrification"),(,,t.,"Vinegar synthesis"):}|`
A. A=q, B=r, C=p, D=t
B. A=q, B=r, C=s, D=t
C. A=s, B=t, C=p, D=r
D. A=t, B=p, C=r, D=s
