A Rich Donor to Your College Gets Fascinated by Gamma-Ray

A rich donor to your college gets fascinated by gamma-ray bursts, and wants to give money to find out more about what produces them. Which of the following should her money go to fund?

A) a radio telescope, sensitive to the radiation given off by cold hydrogen
B) a gamma-ray telescope located on your campus, operated by graduate students
C) a network of visible-light telescopes which can automatically swing to a location provided by an alert system at NASA
D) a large infra-red telescope that is good at finding asteroids and comets at the outskirts of our solar system
E) the donor is too late; all the sources of gamma-ray bursts that we will ever see have already been identified