Sir Edward Spragge (name also written as Spragg or Sprague) (circa 1620 – 21 August 1673) was an Irish admiral of the Royal Navy. He was a fiery, brilliantly accomplished seaman who fought in many great actions after the restoration of King Charles II in 1660.
Can we infer the following?
Sir Edward Spragge fought in 21 battles

Choices:
a). Yes
b). It's impossible to say
c). No
The answer is:
b).