Given That $A = \{ \mathrm { H } , \mathrm { T } \}$

Multiple Choice

Given that $A = \{ \mathrm { H } , \mathrm { T } \}$ , $B = \{ 1,2,3,4,5 \}$ and $C = \{ \text { red, green, blue } \}$ .
Find $n ( A \times B \times B )$ .

A) 30
B) 12
C) 50
D) 10
E) 48