asking this out of spite <3

Which statement is true about the climbers’ heights?

A) Brynn was resting at a constant climbing height when Abby’s climbing height was decreasing.

B) Abby’s climbing height was decreasing when Brynn’s climbing height was increasing.

C) The heights of both climbers increased, then decreased, with no rest at a constant height.

D) Both climbers rested on the wall at a constant height for 2 minutes.