6) A cashflow starting at the beginning of Jan. 2003 requires an initial investment of $5,000 and otherwise produces the following revenue. Find the NPV and profitability index at an effective annual rate 3%. Date (end of month) Amount Dec. 2003 $1,500 Dec. 2004 $1,500 May 2005 $2,000 Dec. 2005 $1,000