During DNA to RNA transcription, there is a code to follow.A changes to U, T to A, C to G and G to C. This code is strictly followed and guarantees a perfect replication of the DNA sequence in the cell. Therefore for a DNA template like:
G C T T A G T C C A T T
The matching mRNA would be
C G A A U C A G G U A A
Meaning the right answer is the first one.