Answer:
C) $1000
Explanation:
First lets calculate the cumulative preferred stock dividend for 2 years
(1000 * 10 ) * 5% = 500 / year
so for 2 years = $1000 since it is cumulative and not paid in one year is added to next year.
Total dividend payable = $2000
so for common stock whatever is left over is paid thus,
Common stock share = Total - Preferred cumulative = 2000 - 1000 = $1000
Hope that helps.