Given That $a = \langle 4 , - 1 \rangle , b = \langle 2,3 \rangle , \text { and } c = \langle - 5,3 \rangle$

Multiple Choice

Given that $a = \langle 4 , - 1 \rangle , b = \langle 2,3 \rangle , \text { and } c = \langle - 5,3 \rangle$ , find the number. $( a - b ) \cdot ( b + c )$

A) -30
B) -60
C) 38
D) -42
E) 18