If $0\mathrm{.}01949<$ x $<0\mathrm{.}01952$ then which of the following must be correct?A$.$ x $=0\mathrm{.}01($cor$.$ to $1$ sig. fig.$)$B$.$ x $=0\mathrm{.}019($cor$.$ to $2$ sig. fig.$)$C$.$ x $=0\mathrm{.}0195($cor$.$ to $3$ sig. fig.$)$D$.$ x $=0\mathrm{.}01950($cor$.$ to $4$ sig.fig.$)$