Which of the following statements must be True? Check all that apply.

The number of Adenines in single-stranded DNA equals the number of Thymines.

The number of Guanines in single-stranded DNA equals the number of Adenines.

The number of Thymines in double-stranded DNA equals the number of Cytosines.

The number of Cytosines in double-stranded DNA equals the number of Guanines.