Simplify the expression. 
 4^3 x 4^5




 
A. 16^8



 
B. 16^15



 
C. 4^8



 
D. 4^15                                                                                                                                                                                                                                                                                                           the ^ symbol means the Number on the right were supposed to be on the top right of the number to the left just didn't know how to paste if