Match the organism with its use in biotechnology.
$(a)$ Bacillus thuringiensis$(i)$ Cloning vector
$(b)$ Thermus aquaticus$(ii)$ Construction of first $rDNA$ molecule
$(c)$ Agrobacterium tumefaciens$(iii)$ $DNA$ polymerase
$(d)$ Salmonella typhimurium$(iv)$ Cry proteins

Select the correct option from the following:

  • A
    $(iii), (iv), (i), (ii)$
  • B
    $(ii), (iv), (iii), (i)$
  • C
    $(iv), (iii), (i), (ii)$
  • D
    $(iii), (ii), (iv), (i)$

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