The simplified value of the expression ​$$\frac{0.75^2 - 0.25^2}{2} \times \frac{2.5^2 - 1.5^2}{4} \times \frac{1}{0.25} \text{ is } \_\_\_\_.$$​

Correct option is B

Given:​

​$$\frac{0.75^2 - 0.25^2}{2} \times \frac{2.5^2 - 1.5^2}{4} \times \frac{1}{0.25}$$

Solution:​

​$$\frac{(0.75 - 0.25)(0.75 + 0.25)}{2} \times \frac{(2.5 - 1.5)(2.5+1.5)}{4} \times \frac{1}{0.25}$$

= $$\frac{0.50 \times1}{2} \times \frac{1\times4}{4} \times \frac{1}{0.25}$$

= 1