How is evidentiary sufficiency determined in a sexual assault case?

As noted, defendant raises evidentiary sufficiency challenges. In determining whether the evidence is sufficient, we must review the whole record in the light most favorable to the challenged findings and determine whether the record contains substantial evidencei.e., reasonable and credible evidencefrom which a rational trier of fact could have found defendant guilty beyond a reasonable doubt. (People v. Hill (1998) 17 Cal.4th 800, 848-849.)