Select correct statements from the following:
a. In the majority of the dicotyledonous plants, the direct elongation of the radicle leads to the formation of the primary root.
b. In monocotyledonous plants, the primary root is short-lived and is replaced by a large number of roots. These roots originate from the lowermost node of the stem and constitute the fibrous root system.
c. Adventitious roots are found in Monstera and banyan tree.
d. The fibrous root system is found in wheat and mustard plants.