<prompt> Standard treatment of whole-brain radiotherapy WB for brain Metastasis :20 grays Gy in 10 fractions30 grays Gy in 10 fractions30 grays Gy in 5 fractions15 grays Gy in 10 fractions  <response>: Ans. B, 30 grays Gy in 10 fractionsWhole-brain radiotherapy WB to 30 grays Gy in 10 fractions - Standard treatment in patients with multiple brain metastases.Current study investigated the potential benefit of dose escalation beyond 30 Gy. 