Which of the following sentences uses commas correctly?
A. Doris and Enid went to their weekly writer's group, and both gave stunning readings to the class.
B. Doris and Enid went to their weekly writer's group, and both, gave stunning readings, to the class.
C. Doris and Enid went to their weekly writer's group, and both, gave stunning readings to the class.
D. Doris and Enid went to their weekly writer's group and both gave stunning readings to the class.