Methotrexate is used in high doses in -: (A) Osteosarcoma, (B) Retinoblastoma, (C) Rhabdomyosarcoma, (D) Ewig's sarcoma
Answer is A. Ans. is 'a' i.e., Osteosarcoma o High dose methotrexate with leucoverin is indicated for chemotherapy in osteosarcoma.