Arrange the following parts of a sentence into a meaningful sentence.

(A) who would have thought
(B) the Human Genome Project would complete its mapping of 99% of the human genome?
(C) discovered the double helix structure of DNA in 1953.
(D) when James Watson and Francis Grick
(E) that 50 year later

Choose the correct answer from the options given below:

(D), (C), (A), (E), (B)

The correct answer is Option (2) → (D), (C), (A), (E), (B)

(D) when James Watson and Francis Grick

(C) discovered the double helix structure of DNA in 1953.

(A) who would have thought

(E) that 50 year later
(B) the Human Genome Project would complete its mapping of 99% of the human genome?