Astronomy current events question: "Sónar Calling GJ273b" radio message

Astronomy 210L, fall semester 2017
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!)

Enrichetta Cardinale, "Sónar Celebrates 25 years of the Festival by Contacting Intelligent Extraterrestial Life" (November 16, 2017)
intranet.sonar.es/mailing/1128/en.html

"Sónar Calling GJ273b" was a radio message containing __________ sent to a potentially habitable exoplanet orbiting Luyten's Star b.
(A) DNA sequences.
(B) dolphin and whale sounds.
(C) solar flare interference.
(D) computer malware.
(E) music samples.

Correct answer: (E)

Student responses
Sections 70178, 70186
(A) : 3 students
(B) : 1 student
(C) : 5 students
(D) : 1 student
(E) : 34 students