Consider the following information on options from the CBOE for Merck:

Bid N/A Ask N/A Size N/AXN/A Vol 6650300 Oct 06, 2006 @ 14:40 ET (Data 20 Minutes Delayed) Calls Last Net Bid Open Ask Vol Sale Int Puts Last Sale Net Bid Ask Vol Open Int 09 Jan 25.00 (VMK AE-E) 17.10 -0.30 17.30 17.50 21 214 09 Jan 25.00 (VMK ME-E) 0.80 pc 0.60 0.80 0 319 09 Jan 30.00 (VMK AF-E) 13.40 pc 13.20 13.40 O 417 09 Jan 30.00 (VMK MF-E) 1.40 +0.20 1.15 1.40 25 63 09 Jan 35.00 (VMK AG-E) 9.20 pc 9.60 10.000 591 09 Jan 35.00 (VMK MG-E) 2.35 pc 2.15 2.35 01173 09 Jan 40.00 (VMK AH-E) 6.50 +0.30 6.50 6.80 28422 09 Jan 40.00 (VMK MH-E) 3.80 pc 3.70 3.90 07174 09 Jan 45.00 (VMK AI-E) 4.20 pc 4.20 4.50 06123 09 Jan 45.00 (VMK MI-E) 6.40 pc 5.90 6.20 0 5513 09 Jan 50.00 (VMK AJ-E) 2.80 pc 2.35 2.75 0 4509 09 Jan 50.00 (VMK MJ-E) 9.30 pc 9.00 9.60 0 982 The open interest for a January 2009 put option that is closest to being at-the-money is: A. 319 B. 5513 O C. 7174 D. 8422 O E. 982