Some statements are given below about animals.
(a) All vertebrates are chordates.
(b) All birds fly in the air.
(c) All insects are parasites.
(d) All molluscs bear shell.
Which of the statement given above is / are correct ?
1
Only (b) and (c)
2
Only (a)
3
Only (c) and (d)
4
Only (b)