In the following question, four number pairs are given. The number on left side of (–) is related to the number on the right side of (–) with some Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives._x005F_x000D_

• A. 7 – 49
• B. 9 – 81
• C. 11 – 121
• D. 15 – 215