Which of the following is/are true about breast self examination:

Answer- A. Performed in different positions like standing, sitting, supine etcBreast self-examination (BSE) has not been shown to improve survivalThe American Cancer Society no longer racommends monthly BSE beginning at age 20 years.Premenopausal women should perform the examination 7-8 days after the menstrual period.The breasts should be inspected initially while standing before a mirror with the hands at the sides, overhead, and pressed firmly on the hips to contract the pectoralis muscles.