You are investing to achieve the following goals: A down payment for a cottage in the amount of $8000 in six years, 84000 for a trip to Europe in three years, and $150,000 to supplement retirement income in 24 years. If you can earn 7 percent compounded monthly on your investments, how much should you be saving each month? a) $392 b) 377 c) $409 d) $396