The number of C-C sigma bonds present in `1` -butyne is

The number of sigma and pi-bonds present in 1, 3-butadiene are respectively (a) 9 and 2 (b) 8 and 2 (c) 9 and 3 (d) 9 and 1 (e) 8 and 1

Number of sigma and pi bonds present in :

The number of C-C sigma bonds in the compound

The number of pi - bonds and sigma - bonds present in naphthalene are respectively