From the following particulars, calculate the quick ratio:

$\backslash$table$[[$Particulars$,$Unit$],[$Current Assets,$490000],[$Creditors$,300000],[$Bank Overdraft,$50000]]$

$1$:$1$

$0\mathrm{.}14$:$1$

$1\mathrm{.}4$:$1$

$1$:$2$