A trap for a commercial food grinder is being installed. According to the 2022 CPC, which of the following statements is true regarding its required cleanout?

• A cleanout is only required if the trap diameter is 3 inches or larger.
• A cleanout is always required on the inlet side of the trap.
• A cleanout is not required if the trap serves a listed trap standard fixture.
• A cleanout is never required if the trap is accessible.