Which answer choice below correctly describes the structure of DNA?

Question

Sugar phosphate backbone with nitrogen bases coming off a single helix.
Sugar nitrogen base backbone with phosphates in the middle forming a double helix.
Sugar phosphate backbone with nitrogen bases in the middle forming a double helix.
Nitrogen bases on the outside with sugar phosphate in the middle of a double helix.

Answer 1

Sugar phosphate backbone with nitrogen bases in the middle forming a double helix.