I need this problem with the step by step solution. I need you show me the formula also. Correct answer is given already.

A project is determined to have equal probability of generating $1 million annually or $500,000 annually for four years. The initial outlay is $2 million. The expected return on Treasury bills is 6% and the market risk premium is 8%. What is the highest project Beta that will justify acceptance of the project? A. 0.0 B. 1.00 C. 1.56 D. 2.31