Which of the following are likely to increase investment expenditure. 1. Low initial capital on projects. 2. A rise in the interest rate. 3. A fall in the interest rate. 4. More favorable business expectations. 5. Less favorable business expectations. Select one: O a. 2. and 4 O b. 2. and 5 O c. 3. and 4 O d. 1. and 4