228.Regarding regulations on modifying motorcycle exhaust pipes, which of thefollowing statements is correct?
(A) Replacing with an exhaust pipe certifiedby the Environmental Protection Administration (EPA) and meeting emissionstandards complies with modification regulations.
(B) Using the same modelOEM parts to replace the exhaust pipe position, without changingspecifications, complies with regulations.
(C) The number and position ofexhaust pipes must not be changed, and the muffler or catalytic convertermust not be removed.