Match the columns I and II, and choose the correct combination from the options given.

	Column I		Column II
a	Bacteriophage Lambda	i	$5386$ nucleotides
b	Bacteriophage $\varphi \times 174$	ii	$48502$ bp
c	Escherichia coli	iii	$4.6\times {10}^6$ bp
d	Homo sapiens	iv	$6.6\times {10}^9$ bp

The correct option is B $a-ii,b-i,c-iii,d-iv$
$DNA$ is a long polymer of deoxyribonucleotides. The length of $DNA$ is usually defined as number of nucleotides (or a pair of nucleotide referred to as base pairs) present in it. This also is the characteristic of an organism. For example, a bacteriophage known as $\varphi \times 174$ has $5386$ nucleotides, Bacteriophage lambda has $48502$ base pairs (bp), Escherichia coli has $4.6\times {10}^6$ bp, and content of human $DNA$ is $6.6\times {10}^9$ bp.