"The Extraditables" have claimed responsibility for the murder of two employees of Bogota's daily El Espectador perpetrated today in Medellin, where two other El Espectator people, Miguel Soler Rodriguez and Martha Luz Lopez, were killed today in separate attacks carried out by gunmen.
Can we infer the following?
"The Extraditables" used firearms to commit murder.

A). Yes;
B). It's impossible to say;
C). No;
The answer is:
A).