Changes in risk premiums and growth expectations

Question

Here is information on Stock A and B:

                                                     Stock A    Stock B

Expected Dividends Next Year           $1.00       $2.33
Expected Constant ROE                      20%        20%
Expected Retention Rate                     70%        30%
Required Return on Stocks of = risk     20%        20%

Which stock is more sensitive to changes in risk premiums and growth expectations?

Also, would you consider either a true growth stock?