Find the incorrect statement from the following.
(A) Tropic rain forests cover around 6 per cent of earth's land surface.
(B) Amazonian rain forest is being cut and cleared for soya bean cultivation or forsion to grasslands for raising beef cattle.
(C) Animals with migratory habits are badly affected by habitat loss and fragmentation.
(D) Mammals and birds require small territories.
(a) $\mathrm{A}$ and $\mathrm{B}$ only
(b) A and D only
(c) D only
(d) $\mathrm{B}$ and $\mathrm{C}$ only