Suppose there are two stocks, A and B. Also suppose there are two possible outcomes. Outcome 1 happens with 80% probability and outcome 2 happens with 20% probability. In outcome 1, stock A has 20% return and stock B has 15% return. In outcome 2, stock A has -5% return and stock B has 7% return. What is the correlation of their returns?

		0.0032
		0.128842812
		1
		9.846153846