The Compounds, Potassium Cyanide, Diethylether, and Cyclobutane When Arranged in an Increasing

The compounds, potassium cyanide, diethylether, and cyclobutane when arranged in an increasing order of their boiling points, will follow the order:

A) potassium cyanide ˂ diethyl ether ˂ cyclobutane.
B) potassium cyanide ˂ cyclobutane ˂ diethyl ether.
C) diethyl ether ˂ cyclobutane ˂ potassium cyanide.
D) cyclobutane ˂ potassium cyanide ˂ diethyl ether.
E) cyclobutane ˂ diethyl ether ˂ potassium cyanide.