A. 3' STOGUTCGCU
B. 5' AGCTAGCGT S
C. 3' SUCGAUCICA
D. 3' TCGATCGCA 5'
The complementary strand of DNA is formed by pairing complementary bases. In DNA, adenine (A) pairs with thymine (T), and guanine (G) pairs with cytosine (C). Additionally, RNA uses uracil (U) instead of thymine.
Given the sequence 5' AGCTAGCGT 3', the complementary strand would read:
3' TCGATCGCA 5'
Therefore, the Correct Answer is D.