If (A+B) = 4, (B+C) = 7 and (C+D) = 5, what is the value of (A+D)?	Answers:
A) 16.
B) 8.
C) 7.
D) 2.
E) -2.
Given A+B = 4   B+C = 7   C+D = 5   (A+B)-(B+C)+(C+D)=(A+D)   =&gt;4 - 7+5= 
<gadget id="calculator">4 - 7+5</gadget>
<output>2</output>
2.   Option 2....
<result>D</result>
If (A+B) = 4, (B+C) = 7 and (C+D) = 5, what is the value of (A+D)?