What is relevant evidence for the prosecution in a criminal case?

The trial court agreed with the prosecution, as do we. Relevant evidence is that "having any tendency in reason to prove or disprove any disputed fact that is of consequence to the determination of the action." (Evid.Code, 210.) That defendant testified he had terminated his gang membership in May 1980 made evidence to the contrary relevant, if only as "rebuttal to the defense penalty evidence." (See People v. Bittaker (1989) 48 Cal.3d 1046, 1103, fn. 30, 259 Cal.Rptr. 630, 774 P.2d 659.)