Which problem reported by a client taking lovastatin requires the most immediate follow-up by the nurse?

A. Muscle pain can be a sign of rhabdomyolysis, a serious side effect of lovastatin that requires immediate evaluation and intervention.B. Altered taste is a less serious side effect and does not require urgent follow-up.C. Diarrhea and flatulence are common and less urgent side effects of lovastatin.D. Abdominal cramps are uncomfortable but less critical compared to muscle pain associated with potential rhabdomyolysis.