A

The cremasteric reflex is mediated by the genitofemoral nerve, whose motor fibers arise from the L1–L2 spinal cord segments; both the sensory (ilioinguinal, L1) and motor (genitofemoral, L1-L2) limbs therefore depend on these roots, making L1 and L2 the correct “root value” of the reflex [Zuckerman, 2023, PMID 37596783; Bademkiran, 2010, PMID 20591560].