PLEASE HELP QUICKLY
Which of the following is a properly punctuated complex sentence?
A. After Betty got tired of teaching yoga, she started a new career making bowls and dishes out of clay.
B. Betty got tired of teaching yoga and she started a new career making bowls and dishes out of clay.
C. Betty got tired of teaching yoga; she started a new career making bowls and dishes out of clay.
D. Betty started a new career making bowls and dishes out of clay after getting tired of teaching yoga.