One strand of a DNA molecule has the base sequence 5’-CACTTA-3’. The complementary base sequence on the other strand of DNA will be 3’-_____-5’.

A.
GTGAAT

B.
GUGAAU

C.
UTUGGT

D.
TGTAAG

The complementary base sequence on the other strand of DNA will be 3’-GTGAAT-5’.

So the correct option is A. GTGAAT.