Rick Has Always Used Internet Explorer, but His Place of Employment

Multiple Choice

Rick has always used Internet Explorer, but his place of employment requires that everyone use Firefox. His co-worker, Rayna, is reviewing the primary features of Firefox.
-Rick is not sure if Firefox is hardware or software. Rayna explains that Firefox is ____.

A) hardware
B) software
C) both a. and b.
D) neither a. nor b.