How many are the incorrect statements from the followings:
a) In museum insects are preserved in insect boxes after collecting and killing.
b) Monkey, gorilla and gibbon are placed in class mammalia.
c) In an order similar characters are more as compared to different genera included in a family.
d) Three pairs of jointed legs are present in all chordates.
A. Two
B. Three
C. One
D. Four
