Sam has received a $50 bond from his grandfather every year for his birthday. He has also

received three other $50 bonds as payment for work done at his grandfather's house. Sam's

twin brother Joel has also received a $50 bond on every birthday, but he has received only one

additional $50 bond for work done. If p is the twins' age, which expression best describes the

sum of the bonds they have received?

A 50p + 200

O

B

100p + 200

C 250p

OD 300p