Detect the incorrect set of polymer : monomer

Question

$\begin{array}{1 1}(a)\;\text{Neoprene : Chloroprene}\\(b)\; \text{Polyvinyl chloride : }CH_2=CHCl(\text{vinyl chloride})\\(c)\;\text{Teflon : }CF_2=CF_2(\text{tetrafluro ethene})\\(d)\;\text{Bakelite : }C_6H_5OH(\text{phenol})\end{array}$