A client has $1 million in assets, but intends to withdraw $50,000 next year as a down payment on a house. The investor has stated he does not want to invade principal when he withdraws the $50,000. What is the minimum return his investment portfolio must earn that will enable him to withdraw the money without dipping into principal?

A) $50,000

B) 5%

C) 10%

D) 20%