1. A financial analyst covering Platinum Oil has determined the following four possible returns given four different states of the economy over the next period.

   Probability	Return
   0.20	-.10
   0.25	-.05
   0.45	0.2
   0.10	0.35

   Calculate the expected return and standard deviation for Platinum Oil.

   	A.	E(R)=10.00% and E(SD)=16%
   	B.	E(R)=9.25% and E(SD)=24%
   	C.	E(R)=11.50% and E(SD)=19%
   	D.	E(R)=9.25% and E(SD)=16%
   	E.	E(R)=10.00% and E(SD)=24%