In the following question, select the number which can be placed at the sign of question mark (?) from the given alternatives.

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Given:

Logic: (1st row + 2nd row) $$\times$$ 3 = 3rd row

For, 1st row

16 + 4 = 20, 20 $$\times$$ 3 = 60

For, 2nd row

9 + 5 = 14, 14 $$\times$$​ 3 = 42

Similarly,

For, 3rd row 

16 + ? = ?, ? $$\times$$ 3 = 240

? = 240 $$\div$$ 3 

? = 80

16 + ? = ? (put ? = 80)

16 + ? = 80

? = 80 - 16

? = 64

Thus, correct option is (b).