A security has the yield at 7% to the investor and the cash flow is $48. The par value of the security is $1,000.00 and is four-year security. What is the Macaulay Duration of the securities? A - The Macaulay Duration of the Securities is 3.55 years. B - The Macaulay Duration of the Securities is 3.72 years. C - The Macaulay Duration of the Securities is 3.67 years. D - The Macaulay Duration of the Securities is 3.46 years