( 1.49 × 14.9 - 0.51 × 5.114.9 - 5.1 ) is equal to :

Answer: Option B

$$\begin{array}{rl}& \left(\frac{1.49\times 1.49\times 10-0.51\times 0.51\times 10}{1.49\times 10-0.51\times 10}\right)\\ & =\frac{10\left[{\left(1.49\right)}^2-{\left(0.51\right)}^2\right]}{10\left(1.49-0.51\right)}\\ & =\left(1.49+0.51\right)\\ & =2\end{array}$$