A Laboratory Method for Preparing Oxygen (O₂) Involves the Decomposition $\rightarrow$

A laboratory method for preparing oxygen (O₂) involves the decomposition of KClO₃.
KClO₃(s) $\rightarrow$ 2 KCI(s) + 3 O₂(g)
How many moles of oxygen are produced when 0.135 moles of KCl are produced by this reaction?

A) 0.135 mol
B) 0.090 mol
C) 0.203 mol
D) 0.405 mol
E) none of these