Retained earnings versus new common stock?? Using the data for a firm shown in the following? table, calculate the cost of retained earnings and the cost of new common stock using the? constant-growth valuation model.???(Click on the icon located on the? top-right corner of the data table below in order to copy its contents into a?spreadsheet.)

Current market price per share	Dividend growth rate	Projected dividend per share next year	Underpricing per share	Flotation cost per share
?$43.00	6?%	?$2.15	? $2.50	? $1.75

a. The cost of retained earnings is %. ?(Round to two decimal? places.)

b.??The cost of new common stock is %. ?(Round to two decimal? places.)