Astronomy current events question: pear-shaped nuclei

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!)

Nicole Casal Moore, "Exotic Atoms Hold Clues to Unsolved Physics Puzzle at the Dawn of the Universe," May 8, 2013
http://www.ns.umich.edu/new/releases/21453-exotic-atoms-hold-clues-to-unsolved-physics-puzzle-at-the-dawn-of-the-universe

An international team of physicists found evidence for pear-shaped nuclei, which may explain why the universe:
(A) is expanding.
(B) does not have flat spacetime.
(C) does not have wormholes.
(D) has life that is carbon-based.
(E) has more matter than antimatter.

Correct answer: (E)

Student responses
Sections 30682
(A) : 3 students
(B) : 1 student
(C) : 0 students
(D) : 1 student
(E) : 17 students