Please explain if these are true or false!

a. Risk-free debt borrowing does not introduce any default risk and thus will not increase the expected return on equity. b. A firm should distribute cash to shareholders if the return on the cash holdings does not satisfy investors' expected rate of return. c. Issuing equity is costly because the firm value will be divided among a larger number of shares and thus the value of each individual share is reduced. d. When Company PaperMate announced bankruptcy, its share price fell from $2.0 to $0.0 per share. There were 1 million shares outstanding. Thus, the cost of bankruptcy for the firm is roughly $(200.0)1m=$2 million