Which of the following statement(s) is/are correct ?

A. In angiosperms, each embryo sac has a three-celled egg apparatus one egg cell and two synergids, three antipodal cells and two polar nuclei.

B. All seed bearing plants i.e., gymnosperms and angiosperms follow dipontic life patterns of plants.

C. In gymosperms, roots in some genera have fungal association in the form of mycorrhiza (Pinus) while in some others (Cycas) small specialized roots called coralloid are associated with N2 fixing cyanobacteria.

D. All of the above

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