What does $\mathrm{A}, \mathrm{B}, \mathrm{C}, \mathrm{D}, \mathrm{E}$ and $\mathrm{F}$ represent in this figure?$\pi$ -chart for number of species of major taxa of plants.
(a) A: Ferns and allies, B: Mosses, C: Algae, D: Fungi, E: Lichens, F: Angiosperms
(b) A: Fungi, B: Mosses, C: Lichens, D: Ferns and allies, E: Angiosperms, F: Algae
(c) A: Angiosperms, B: Ferns and allies, C: Fungi, D: Lichens, E: Algae, F: Mosses
(d) A: Mosses, B: Ferns and allies, C: Angiosperms, D: Lichens, E: Algae, F: Fungi