Which of the following solutions will have the lowest freezing point?

Group of answer choices

$0\mathrm{.}035$ mol kg$-1$ CH$3$CH$2$OH

$0\mathrm{.}015$ mol kg$-1$ BaCl$2$

$0\mathrm{.}010$ mol kg$-1$ KBr

$0\mathrm{.}010$ mol kg$-1$ Na$2$CO$3$