Which one of the following is the common factor of (47^43 + 43^43) and (47^47 + 43^47) ?  Pick.
A) (2+56)
B) (47+43)
C) (3+7)
D) (4+9)
E) (12+19)
Explanation:   When n is odd, (x^ + a^n) is always divisible by (x + a).   Each one of (47^43 + 43^43) and (47^47 + 43^47) is divisible by (47 + 43).   (47+43)
<result>B</result>
Which one of the following is the common factor of (47^43 + 43^43) and (47^47 + 43^47) ?