An Ice Skater's Blade Pushes Down onto the Ice Very

An ice skater's blade pushes down onto the ice very hard, creating water as a result of the pressure from the weight of the skater. How is her skate acting like a glacier?

A) Glaciers glide along the ground on only a small, thin blade of ice.
B) The weight of the ice in the top part of the glacier melts some of the ice at the bottom of the glacier, allowing for of plastic flow.
C) Glaciers always move over smooth ground, and the skating rink is smooth.
D) When the skater produces water at the bottom of the skate, that water impedes her motion. In a similar way, the partially melted ice at the bottom of a glacier impedes its flow.