A fund earned a net investment income (i.e. Ending Balance - (Starting Balance + Deposits/Withdrawals)) of 9200 during 1999. The beginning and ending balances of the fund were 100000 and 129200, respectively. A deposit was made at time K during the year. No other deposits or withdraws were made. The fund earned 8% in 1999 using the dollar-weighted method. Determine then date corresponding to time K. (a) April 1 (b) May 1 (c) July 1 (d) Sept. 1 (e) Oct. 1