# Catkin is a type of

$\begin{array}{1 1}(A)\;\text{Flower}\\(B)\;\text{Inflorescence}\\(C)\;\text{Stem}\\(D)\;\text{All of these}\end{array}$

Classification of inflorescence:
Inflorescence$\rightarrow$ Racemose,cymose,special
Racemose$\rightarrow$ Spike,catkin,spadir,capitulum
Hence (B) is the correct answer.