Suppose you have 22% of your portfolio invested in Stock A which earns a return of 9.95%. You have 63% of your portfolio invested in Stock B which earns a return of 13.50%. Finally, you have 15% of your portfolio invested in Stock C which earns a return of 6.80%. What is the standard deviation for your portfolio?

Group of answer choices

5.51%

4.74%

2.51%

3.00%