Best exercise in first 24 hours post-mastectomy?

Correct option is B

Pendulum swings are gentle shoulder exercises used early after surgery to promote lymph drainage and prevent stiffness without stretching incisions. Explanation of options:
· (a) ✘ Too aggressive for immediate post-op period.
· (b) ✔ Recommended within first 24 hours.
· (c) ✘ Elbow exercises are useful but not the most important.
· (d) ✘ May strain surgical site if done too early.