The correct option is A Mustard, Calotropis, Alstonia
In alternate type, leaf arises at each node in an alternate manner. Example - mustard and sun flower.
In opposite type, a pair of leaves arise at each node and lie opposite to each other. Example - Calotropis and guava.
In whorled type, more than two leaves arise at a node and form a whorl. Example - Alstonia and Nerium.