Answer:
$90
Step-by-step explanation:
Option B is wrong because $1,035 is the dividend received from the company by Elizabeth.
Option C is wrong because $270 is the current market price of each share.
Option D is incorrect because $10,350 is the common stock value of 115 shares.
Option A is correct because $90 is Elizabeth's per-share basis in the company for which she received a dividend. Share's price increased to $270 after success.