A
G
T
X
Answer is Right!
Answer is Wrong!
The correct answer is C. T.
The missing character is the next letter in the alphabet after the previous three letters. The first three letters are A, B, and C. The next letter in the alphabet after C is T.
The other options are incorrect because they are not the next letter in the alphabet after the previous three letters. Option A is A, which is the first letter in the alphabet. Option B is G, which is the seventh letter in the alphabet. Option D is X, which is the twenty-fourth letter in the alphabet.