A scientist is studying a parent strand of 7 base pairs of DNA (14 total nucleotides), and she is able to determine that the strand has 4 Adenines, and 3 Guanines. Using that information, which choice accurately describes how many Thymines and Cytosines are in the parent strand of DNA that she is studying? a 3 Thymines, 4 Cytosines b 4 Thymines, 3 Cytosines c 3 Thymines, 3 Cytosines d 4 Thymines, 4 Cytosines