Study the given pattern carefully and select the number that can replace the question mark (?) in it.

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Given: 

Logic: {Product of two upper number - 2 } ÷2 = Lower number 

{(2 × 3) - 2}÷2  = 4 ÷ 2 = 2 

{(3 × 4) - 2}÷2 = 10 ÷ 2 = 5

Similarly;

{(4 × 5) - 2}÷2 = 20 - 2 = 18 ÷ 2 = 9 

{(5 × 8) - 2}÷2 = 40 - 2 = 38 ÷ 2 = 19 

Thus, correct option is (c).