How Were the Himalayas Formed

How were the Himalayas formed?

A) by the rifting (pulling apart) of the Eurasian Plate and the Indo-Australian Plate
B) by the collision of peninsular India with the Asian landmass
C) by the upwelling of molten matter from a hot spot beneath the Indian subcontinent
D) by the erosion of the landscape north and south of the region that would become the mountains
E) by volcanic activity