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On January 1, 2007, you initiate an investment account, with the following value and deposit/withdrawal activity during the year: W mm' 1 10.000 depout June 30 12.000 .1: December 31 10.000 \\ (The "account values" represent the amount in the account immediately before the deposit or withdrawal activity on that date.) The time- weighted and dollar-weighted rates of return on the account during 2007 are equal. Find the nonzero value of X --both its magnitude, and whether it's a deposit or a withdrawal. (For the dollar-weighted rate of return, assume simple interest from the date of each deposit or withdrawal.) 0 a. Cannot be determined from the given information. 0 b. 4,000 withdrawal 0 c. 2,000 deposit 0 d. 4,000 deposit 0 e. 2,000 withdrawal