In the simple subtraction problem below some single digits are replaced by letters .Fined the value of 7A+5D+6CD?	Choose the correct choice from the following options.
A) 288 B) 3799 C) 277 D) 278 E) 240
15 - 7= 
<gadget id="calculator">15 - 7</gadget>
<output>8</output>
8 So D= 8   10 + (C -1) - 8 = 4 So C = 3   10 + (5-1) - B = 7 So B = 7   (A-1) - 1 = 6 So A = 8   7A + 5D + 6CD = 56 + 40 + 144= 
<gadget id="calculator">56 + 40 + 144</gadget>
<output>240</output>
240   Answer:240
<result>E</result>
In the simple subtraction problem below some single digits are replaced by letters .Fined the value of 7A+5D+6CD?