At room temperature density of water $1\mathrm{.}0\frac{g}{m}l$ and of acetone $0\mathrm{.}784\frac{g}{m}l,$ the flow time of water in an Ostwald viscometer $35s$ and of acetone $15\mathrm{.}28s.$ The absolute viscosity of water $0\mathrm{.}0894$ poise. The relative viscosity of acetone is

$0\mathrm{.}234$

$0\mathrm{.}324$

$0\mathrm{.}342$

$0\mathrm{.}432$