Which of the following is not a production support activity?

Managers compute the plant administration cost-allocation rate as:

A) total plant administration costs - total supervision costs. B) total plant administration costs × total supervision salaries. C) total plant administration costs + total supervision salaries. D) total plant administration costs - total supervision salaries. E) total plant administration costs / total supervision salaries.

Which of the following is not a common characteristic of preferred stock?

a. Voting rights b. Preference as to dividends c. Preference in liquidation d. Callability by the corporation e. None of the answers are correct.