Which Statement Best Describes Breast Self-Examinations

Which statement best describes breast self-examinations? 

A)  If a lump is detected, women should not panic because 80-90% of all lumps are noncancerous. 
B)  Women with breast implants should not perform breast self-exams. 
C)  A breast self-exam should be done at the same time each month preferably during menstruation. 
D)  If one breast is slightly larger than the other, this should be reported to a doctor immediately.