Gravitational Red Shift, Which Is One Prediction Based on General

Multiple Choice

Gravitational red shift, which is one prediction based on general relativity,

A) has been confirmed by experiments using laser light.
B) states that light coming from the Earth's surface to space will appear slightly more blue in space than it does on Earth.
C) states that light coming to the Earth's surface from space will appear slightly more red on Earth than it does in space.
D) cannot be confirmed using data from the Gravity Probe B satellite.
E) has never been confirmed and remains a mystery.