Gel electrophoresis can separate the DNA fragments because:

(A) Agarose gel has sieving effect.
(B) DNA fragments are positively charged.
(C) DNA fragments are of different size.
(D) DNA fragments can move in an electric field.

Choose the correct answer from the options given below:

(A), (C) and (D) Only

The correct answer is Option (2) → (A), (C) and (D) Only