Simplify: 0.8×(12+0.25)0.5−14\frac{0.8 \times (\frac{1}{2} + 0.25)}{0.5 - \frac{1}{4}}0.5−410.8×(21+0.25)
2.02.02.0
1.21.21.2
1.51.51.5
2.42.42.4