The beta-thio chloride shown (racemic) hydrolyses in water. Select all correct statements about the reaction.

The compound is 1-chloro-2-(methylthio)propane. Sulfur displaces chloride intramolecularly to form a cyclic episulfonium ion, so the rate is higher than for 1-chlorobutane. Ionisation is the slow step and the rate is first order in substrate. Water can open the ring at either carbon, giving two isomeric hydroxy sulfides. A free primary carbocation is not required (the sulfur assists), and the rate is not second order in water.