An investment has a 30% chance of getting a 5 % return, a 30% chance of getting 10% return, 20% chance of getting 2%, and 20% chance of lose 10% return. How much is the expected return and standard deviation for this investment?

A. 2.9% and 7.27%

B. 2.9% and 7.06%

C. 1.75 and 5.12%

D. 1.75% and 7.16%

E. None of the above