C$.$ None of the other statements$/$options is correct.

D$.$ The higher the risk associated with a project or a corporation the lower the required expected return by investors would be$.$

$5.$ Select only one of the five options below. Thabo owns a motor car. The life cycle cost includes:

A$.$ The cost of putting petrol into the car from time to time.

B$.$ The purchasing price of the car.

C$.$ The cost of replacing the car's tyres every few thousand kilometres.

D$.$ The cost of maintaining the car $($taking it for services$).$

E$.$ All the statements are correct.

$6.$ Select only the statement that are true:

A$.$ None of the other statements$/$options is correct.

B$.$ The minimum acceptable rate of return $($MARR$)$ for a project is usually less than the company's cost of capital.

C$.$ Companies $($and governments$)$ with high levels of debt are considered riskier by lenders and they usually demand higher interest rates from them.

D$.$ If the income of companies with high levels of debt is affected by events such as natural disasters and lockdowns due to Covid$-19,$ then they are less likely to pay interest on loans and repay debt $($compared to companies with much lower levels of debt$).$