Which statement is true about a fixture's overflow according to the rule?

• A. Required
• B. Optional
• C. Prohibited
• D. Never allowed

Answer: (B)

The rule treats a fixture’s overflow as something that can be included when appropriate but is not required for every fixture. An overflow gives a path for excess water to drain if the fixture overfills, helping prevent damage, but the code does not mandate that every fixture must have one. Some fixtures are designed to operate safely without an overflow, or their design and venting arrangement adequately manage overflow risk without an internal overflow opening. That’s why describing it as optional best fits the rule. The other options imply a universal requirement, a prohibition, or an absolute ban, which isn’t what the rule states.