Which statement best explains whether or not a calculator is the most efficient way to simplify (0.68 – 0.38 - 0.2) x 2.3? ☆Multiplying the amount in the parentheses by 2.3 will be a time-consuming process, so using a calculator would most likely be more efficient. ☆ Some of the decimals are to the tenths digit and others are to the hundredths, so using a calculator would most likely be more efficient. ☆ The calculations inside the parentheses are easily done by hand and yield a value easily multiplied by 2.3, so finding the solution by hand would most likely be more efficient. ☆ Multiplying any number by 2.3 can be done quickly by hand, so solving this problem by hand would most likely bed more efficient.​