The essence of Pfizer's capital structure policy is

a. maximize as many of the costs associated with the capital structure including the effects of tax rates, the costs of financial distress and other funding costs.

b. maximize the value of the firm by using a much debt and as little equity as possible in the capital structure.

c. minimize the value of the firm by using only cash and equity, no debt, in the capital structure.

d. minimize many of the costs associated with capital structure including the effects of tax rates, the costs of financial distress and other funding costs.