Which of the following statements is/are true
(a) If the stem is jointed with solid nodes and hollow intemodes, it is called caudex
(b) In Tridax the stem is decumbent
(c) Corm is a condensed form of rhizome growing more or less in vertical direction
(d) Sucker is an underground modification of stem
(e) Biparous type of cymose branching is seen in Saraca.