Match the following and choose the correct combination from the options given below.

	Column - I		Column - II
A.	Escherichia coli	I.	nif gene
B.	Bacillus thuringiensis	II.	Interferon
C.	Rhizobium meliloti	III.	Bt toxin
D.	Agrobacterium tumefaciens	IV.	Vector

	A	B	C	D
1.	II	I	IV	III
2.	II	I	III	IV
3.	II	III	I	IV
4.	IV	I	II	III

• A

  1

• B

  2

• C

  3

• D

  4