The largely tropical Amazonian rain forest in south America has greatest biodiversity on earth. It is home to more than $40,000$ species of plants, $3000$ of fishes, $1,300$ of birds, _____ of mammals, _____ of amphibians, $378$ of reptiles and of more than $1,25,000$ invertebrates.

Match for $\mathrm{M}$ and $\mathrm{N}$ with the species-area relationship shown in the graphic representation below and choose the correct option.

Given below is the representation of the extent of the global diversity of invertebrates. What groups the four portions (A-D) represent respectively?