3 Which of the following case(s) could result from an asset substitution problem? Choose all correct answer(s). Both the bond yield and share price of a company jump up on its announcement of launching a new business venture. Firms forego positive NPV projects because debtholders benefit at shareholders' cost. The bond price drops but the share price of a company jumps up on its announcement of launching a new business venture. Shareholders can gain at the cost of debtholders when managers decide to take on negative NPV projects that increase the risk of the firm