What does condensation at or near the vent often indicate?

What does condensation at or near the vent often indicate?

• A. Blockage or improper vent design causing moisture buildup and possible leaks.
• B. Excessive air flow that dries out the vent and prevents moisture.
• C. Condensation is caused by a perfectly clean vent with cold air.
• D. A vent that is too short will always have condensation.

Answer: (A)