For positive a1,…,an, state the AM–GM inequality with equality condition.

A (a1 + … + an)/n ≤ (a1…an)^(1/n), equality iff all ai are equal

B (a1 + … + an)/n = (a1…an)^(1/n) for all inputs

C (a1 + … + an)/n ≥ (a1…an)^(1/n), equality iff all ai are equal

D (a1 + … + an)/n ≥ (a1…an)^(1/n), equality iff a1 = a2

Correct Answer: Option C