What is Chargaff’s first rule?

• A. The amount of adenine (A) is equal to the amount of cytosine (C)
• B. The amount of guanine (G) is equal to the amount of thymine (T)
• C. The amount of adenine (A) is equal to the amount of thymine (T)
• D. The amount of guanine (G) is equal to the amount of adenine (A)

Answer: (C)