Use a Calculator to Find an Approximate Solution to the Equation

Multiple Choice

Use a calculator to find an approximate solution to the equation. Round your answer to the nearest thousandth.
-4m² + 8m + 2 = 0

A) { -0.293, -1.707}
B) { -4.707, -3.293}
C) { -0.427, -0.073}
D) { -2.225, -2.225}