4. An investor has just purchased some Treasury securities with an agreement to sell them back at a total price of $100,500 at the end of a 30-day period. The yield (i.e. repo rate) on this repurchase agreement is 6%. How much total interest will this investor earn? A) $500 B) $5,000 C) $6,000 D) Undetermined Hint: Use a year of 360 days to simplify the calculation