The following data concerning Spencer Trangenics capital structure is available.

	Book Value	Market Values
Accts Payable and Accruals	$300	$250
Short term debt	150	150
Long term debt	450	600
Preferred Stock	75	150
Common Stock	600	1500
Total	1575	2650

The percentage of common stock in Spencer's weighed average cost of capital is

A-66.7%

B-62.5%

C38.1%

D-56.6%

E-31.25%

None of the above___________ (fill in blank)

Please guide me through this question. Thank you