Astronomy current events question: dark matter detected?

Astronomy 210L, spring semester 2013
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!)

Camille Carlisle, "Homing in on Dark Matter," April 16, 2013
http://www.skyandtelescope.com/news/Dark-Matter--203199671.html

The Cryogenic Dark Matter Search (CDMS) collaboration detected possible three dark matter events from sensors:
(A) at old atomic bomb test sites.
(B) on the dark side of the moon.
(C) in a deep underground mine.
(D) downrange from the Large Hadron Collider.
(E) in an Antarctic research station.

Correct answer: (C)

Student responses
Sections 30678, 30679, 30680
(A) : 1 student
(B) : 6 students
(C) : 33 students
(D) : 5 students
(E) : 3 students