Chandra is paid under Option A.If h rep- resents the number of hours worked and s represents Chandra's total sales, which of the following expressions could be used to find her weekly pay?
A. .01(h)(s)
B. 7.50(s) + .01(h)
C. 7.50 + (h) + 0.01
D. 7.50(h) + 0.01(s)