Michael Currently Saves 5 Percent of His Income

Michael currently saves 5 percent of his income.Which of the following would likely lead Michael to save more of his income than he currently does?

A) If the interest rate Michael could earn on his savings fell
B) If Michael learned he had just earned a promotion and a large increase in salary
C) If Michael anticipated that the tax rate on income in the future would fall
D) If Michael learned that his wife would have to stop working a year from now