Christopher saves $550 every month. Assume that Matthew and Christopher both save money at constant rates. Whose unit rate is higher, and by how much?
A.
Christopher's savings per month is higher than Matthew's savings per month by $50 per month.
B.
Matthew's savings per month is higher than Christopher's savings per month by $50 per month.
C.
Christopher's savings per month is higher than Matthew's savings per month by $100 per month.
D.
Matthew's savings per month is higher than Christopher's savings per month by $100 per month.
E.
Matthew and Christopher both save the same amount, $550 per month.
