Brain Tumours

What would be your standard Rx for adult SR-MB

A. CSI only 36Gy (54Gy PF). B. CSI only 23.4Gy (54Gy PF).

C. CSI 36Gy (54Gy PF) + ChemoRx. D. CSI 23.4Gy (54Gy PF)+ ChemoRx.