A Single Human Cell Encloses About 1

A single human cell encloses about 1.5 meters of DNA containing 4.5 billion base pairs. How far apart are these base pairs in the DNA?

A) 3.3 × 10 ^{− 10} nm
B) 3.3 × 10¹⁰ nm
C) 3 × 10⁹ nm
D) 300 nm
E) 0.33 nm