What type of behavioural bias does the following situation exemplify? The management of many Canadian companies avoids debt financing because of fear of increases in risk, even though debt financing has been proven to provide large interest tax shields to a company.

A) Heuristical bias.

B) Hubris.

C) Self-attribution bias.

D) Loss aversion.

E) Under-optimism.

The answer is not self-attribution bias.