Astronomy current events question: Keck Observatory funding

Astronomy 210L, spring semester 2012
Cuesta College, San Luis Obispo, CA

Students are assigned to read online articles on current astronomy events, and take a short current events quiz during the first 10 minutes of lab. (This motivates students to show up promptly to lab, as the time cut-off for the quiz is strictly enforced!)

Kelly Beatty, "Closure Looms for Keck Interferometer," February 17, 2012
http://www.skyandtelescope.com/news/home/Closure-Looms-for-Kecks-Interferometer-139509093.html

NASA has decided to stop funding interferometry operations at the twin Keck Observatory telescopes at Mauna Kea in Hawaii, which was used to primarily image:
(A) possible incoming asteroids and comets.
(B) sources of radio interference in other solar systems.
(C) supergiants on the verge of going supernova.
(D) dusty disks surrounding nearby stars.
(E) light from binary star systems.

Correct answer: (D)

Student responses
Sections 30678, 30679, 30680
(A) : 5 students
(B) : 5 students
(C) : 12 students
(D) : 25 students
(E) : 8 students