Vaginal candidiasis is most common in **pregnant women** due to hormonal changes, not non-pregnant women. While cottage cheese-like discharge, intense pruritus, and presence of buds and hyphae in KOH smear are typical, the statement that it is most common in non-pregnant women is false. Pregnancy increases risk due to elevated estrogen and glucose levels.

**✓ Correct: C. Most common in non-pregnant women**