In the simple subtraction problem below some single digits are replaced by letters .Fined the value of 7A+5D+6CD?  Choose the correct choice:  A) 288  B) 3799  C) 277  D) 278  E) 7A+5D+6CD=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:7A+5D+6CD=240
<result>E</result>
In the simple subtraction problem below some single digits are replaced by letters .Fined the value of 7A+5D+6CD?