What is the standard deviation of the returns on a $30,000 portfolio that consists of Stocks S and T? Stock S is valued at $18,000.

State of Economy	Probability of State of Economy	Rate of Return if State Occurs
		Stock S			Stock T
Boom	.05		.11			.09
Normal	.85		.08			.07
Bust	.10		.05			.04

	A)	2.07 percent
	B)	3.36 percent
	C)	2.49 percent
	D)	3.63 percent
	E)	2.80 percent