Appearance of vegetative propagules from the nodes of the plants such as sugarcane and ginger is mainly because

Question

$\begin{array}{1 1} \text{a.Nodes are shorter than internodes} \\ \text{b.Nodes have meristamatic cells} \\ \text{c. Nodes are located near the soil} \\ \text{d.Nodes have non photosynthetic cells.} \end{array} $