Which of the following statement is incorrect ?

A. Double fertilization is unique to gymnosperms and monocotyledons.

B. Sequoia, a gymnosperm, is one of the tallest tree species.

C. Phaeophyceae members possess chlorophyll a, c, carotenoids and xanthophylls.

D. Moss is a gametophyte which consists of two stages namely, protonemal stage and leafy stage.