What Is the Primary Reason Why Mountains Substantially Taller Than

Multiple Choice

What is the primary reason why mountains substantially taller than Mt.Everest are unlikely to arise on the Earth?

A) The high geothermal gradient in the crust causes mountains to collapse under their own weight.
B) Exhumation proceeds faster than uplift.
C) Extreme elevations cause chemical weathering to outpace uplift.
D) Uplift is limited by the rate of subduction.