Answer:
c. $800
Explanation:
Taxpayer B was the owner of first 200 shares on Jan 1, 2018. So, the dividend declared by the company will become taxable ( 200* $2 = $400).
Company declared another dividend on Feb 1, 2018. the declaration stated that the dividend of $2 per share would be payable to shareholders who are in record on March 1, 2018. Taxpayer A transferred 200 shares to Taxpayer B on Feb 15, 2018 so Taxpayer B was in record of Company on March 1, 2018. Hence, B has to pay tax on dividend of another 200 shares ( 200* $2 = $400)
so, $400 + $400= $800