Pick out the wrong statement.

For the manufacture of styrene, the major raw materials are benzene and ethylene

One important copolymer of styrene is SBR$,$ which is widely used in the manufacture of automobile tyres

Manufacture of phenol by chloroben$-$zene$-$eaustic process involves. The chlorination of benzene, causticisation and hydrolysis

Phenol manufacture by chlorobenzene$-$caustic process is competitive even when low cost chlorine is not available