If the bond energies of C-H , C≡C , O=O , C=O and O-H bonds are p , q , r , s , t respectively ( 1 ) [ 8s + 4t ] - [ 4p + q + 5r ] ( 2 ) [ 4p + 2q + 5r ] - [ 8s + 4t ] ( 3 ) [ 4p + 2q + 5r + 8s + 4t ] ( 4 ) [ 2p + q + 5r ] - [ 8s + 4t ]

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2 H C \equiv C H + 5 O_{2} \to 4 C O_{2} + 2 H_{2} O

C - H, C \equiv C, O = O, C = O

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p, q, r, s, t

\to - 6 p + q + 3 r + 8

p - 2 q - 5 r - s

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¯ ¯ ¯ r = (2 t - 1) ¯ ¯ ¯ a + (4 t - 2) ¯ ¯ b - 2 (t + 3) ¯ ¯ c

¯ ¯ ¯ r = (6 - 6 s) ¯ ¯ ¯ a + (4 s - 4) ¯ ¯ b + (4 - 8 s) ¯ ¯ c

¯ ¯ ¯ r = (2 t - 1) ¯ ¯ ¯ a + (4 t - 2) ¯ ¯ b - (2 t + 3) ¯ ¯ c

If $2^{p} {.3}^{q} {.5}^{r} = 60$ , which of the following is true? Given; p, q, r are natural numbers.

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