Question with options: can we draw the following hypothesis from the context? 

Context:

A young gunman known as Scarface has been jailed for life for the murder of a promising teenage footballer. Richard Harrison-Allen, 20, shot Etem Celebi dead in November 2007 as he tried to flee the scene in the Smalley Close estate, Stoke Newington, north London. Gang member Harrison-Allen, from Hackney, east London, who was convicted of the teenager's murder earlier this month, was sentenced to a minimum of 26 years at St Albans Crown Court. He sat motionless as sentence was passed.

Hypothesis: Scarface is the nickname of Richard Harrison-Allen.
OPT: a). yes. b). no.
A:
a).