To pass DNA to RNA we must remember that Thymine (T) changes for Uracil (U), in the provided sequence we have the mold DNA, so we need to build its RNA complementary, that is to say, pairing Adenine (A) with Uracil (U), and Cytokine (C) with Guanine (G).
Original DNA strand: CTG ATC
Obtaining complementary mRNA
CTG ATC
GAC UAG
Therefore we can say that the correct answer is option A.