Microlensing to Detect Extrasolar Planets Depends on

Multiple Choice

Microlensing to detect extrasolar planets depends on

A) the gravity of a distant star and planet causing light from a distant star to be bent and momentarily brightened.
B) the use of very small lenses that are combined to make a large telescope.
C) the use of black holes to curve space and time to bring the image of the planets closer to Earth.
D) All of the above