The correct answer is D. position = "O#r".

A. position = "ff" will match "Officer" because it contains the substring "ff". B. position = "O??icer" will match "Officer" because it contains the substring "Oicer". C. position = " ?ff*" will match "Officer" because it contains the substring "ff" and the substring "??" can match any character. D. position = "O#r" will not match "Officer" because it does not contain the substring "icer".