Scenario 21-3 Zach Knows That He Will Ultimately Face Retirement. Assume That

Scenario 21-3
Zach knows that he will ultimately face retirement. Assume that Zach will experience two periods in his life, one in which he works and earns income, and one in which he is retired and earns no income. Zach can earn $250,000 during his working period and nothing in his retirement period. He must both save and consume in his work period with an interest rate of 10 percent on savings.
-Refer to Scenario 21-3.If the interest rate on savings increases,

A) Zach will decrease his savings in the work period if the income effect is greater than the substitution effect for him.
B) Zach will increase his savings in the work period if the income effect is greater than the substitution effect for him.
C) Zach will increase his savings in the work period if the substitution effect is greater than the income effect for him.
D) Both a and c are correct.