Marker for testicular tumor is -: (A) Beta hCG, (B) Acid phosphatase, (C) Alkaline phosphatase, (D) Alpha fetoprotein
Answer is A. Tumor markers of Germ cell tumors of the testis

Beta HCG
Alpha feto protein (AFP)
LDH


Beta HCG - concentration is increased in both seminoma & non-seminoma
AFP - concentration is increased in only non-seminoma
LDH - is increased in both, it is not as specific as either of AFP or Beta HCG.
So both β hCG and AFP are markers for testicular Ca, but if we have to choose one option, we would go for β hCG as its seen in both seminomas as well as non-seminoma

Some other tumor markers for testicular Ca (but not imp.) are

Placental alkaline phosphates (PLAP)
Gamma-glutamyl transpeptidase (GGT)