A salesperson receives a salary of $100 a week and a commission of 5% on all sales. What must be the amount of sales for a week in which the salesperson's total weekly income is $360?
(A) $6,200
(B) $5,200
(C) $2,600
(D) $720
(E) $560
(A) $6,200
(B) $5,200
(C) $2,600
(D) $720
(E) $560