Aunt Mary owns a bakery where she sells lemon cakes for R dollars a piece. Each lemon cake is made with S kgs of flour, and T kgs of lemon. At the local market, flour is sold at U dollars per kg, and lemon at V dollars per kg.
How much profit has she made, after selling W lemon cakes?	Select the correct option.
A) WSU-TVR
B) WR-WTV-WSU
C) WTV+WR+WSU
D) W(TU-SV-R)
E) R(W+UV+TV)
The cost of lemon used for one cake=TV dollars   The cost of flour used for one cake= SU dollars   Then, the cost price=W(TV+SU) dollars   The selling price= RW dollars   So, the profit= RW-W(TV+SU) dollars   The answer is WR-WTV-WSU!!
<result>B</result>
Aunt Mary owns a bakery where she sells lemon cakes for R dollars a piece. Each lemon cake is made with S kgs of flour, and T kgs of lemon. At the local market, flour is sold at U dollars per kg, and lemon at V dollars per kg.
How much profit has she made, after selling W lemon cakes?