$K_{sp}$ of $\mathrm{CaF}{}_2$ is $3.2\times 10^{-11}$. Neglect $s$ relative to the added ion concentration where appropriate. Choose the correct statement(s).

1. ASolubility in $0.01\mathrm{M}$ $\mathrm{NaF}$ is $3.2\times 10^{-7}$ $\mathrm{M}$
2. BSolubility in $0.01\mathrm{M}$ $\mathrm{CaCl}{}_2$ is $2.8\times 10^{-5}$ $\mathrm{M}$
3. CSolubility in $0.01\mathrm{M}$ $\mathrm{NaF}$ is greater than in $0.01\mathrm{M}$ $\mathrm{CaCl}{}_2$
4. DSolubility in pure water is $2.0\times 10^{-4}$ $\mathrm{M}$