Given the following probability distribution, what is the expected return and the standard deviation of returns for Security J?

state	Pr	Rj
1	.2	10%
2	.6	15%
3	.2	20%

	a.	12%; 5.18%
	b.	20%; 5.00%
	c.	15%; 3.16%
	d.	15%; 10.00%
	e.	15%; 6.50%