In an income-retirement choice diagram, indicate the effect on an individual's indifference cures and/or budget constraints, and subsequent retirement decisions, of each of the following: Retirement of one's spouse b) Illness of one's spouse c) Improvements to the health of the elderly d) Permanent displacement from a high-wage job in the steel industry to a low-wage job in the service sector e) Improvements in the leisure industry such that retirement is now relatively more attractive