Suppose you have $10,000 and a choice of two alternatives: A) put the money in a savings account that pays 4% per year, and B) buy a stock that has a 50% chance to gain 15% in value after 1 year, and...

Suppose you have $10,000 and  a choice of two alternatives: A) put the money in a savings account that pays 4% per year, and B) buy a stock that has a 50% chance to gain 15% in value after 1 year, and a 50% chance to lose 5%. What will be the expected return for either alternative, and which one would you choose? Why?