A city council will select 2 of 9 available firefighters and 1 of 5 available police officers to serve on an advisory panel. How many different groups of 3 could serve on the panel?	Pick.
A) 36  B) 72  C) 144  D) 180  E) 432
OA 180   9C2 * 5C1   using the combination formula to choose 2 from 9 and 1 from 5   180
<result>D</result>
A city council will select 2 of 9 available firefighters and 1 of 5 available police officers to serve on an advisory panel. How many different groups of 3 could serve on the panel?