**A) 42**

B) 44

C) 46

D) None of these

Let the numbers be *x* and *x* + 2.

Then, (*x* + 2)^{2} – *x*^{2} = 84

4*x* + 4 = 84

4*x* = 80

*x* = 20.

The required sum = *x* + (*x* + 2) = 2*x* + 2 =** 42**

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