Given below are two statements :
Statement $\mathrm{I}$ :
In the coagulation of a negative sol, the flocculating power of the three given ions is in the order -
${\mathrm{Al}}^{3+}>{\mathrm{Ba}}^{2+}>{\mathrm{Na}}^{+}$
Statement $\mathrm{II}$ :
In the coagulation of a positive sol, the flocculating power of the three given salts is in the order -
$\mathrm{NaCl}>{\mathrm{Na}}_2{\mathrm{SO}}_4>{\mathrm{Na}}_3{\mathrm{PO}}_4$
In the light of the above statements, choose the most appropriate answer from the options given below:

• A

  Both Statement $\mathrm{I}$ and Statement $\mathrm{II}$ are incorrect.
• Correct answer
  B

  Statement $\mathrm{I}$ is correct but Statement $\mathrm{II}$ is incorrect.
• C

  Statement $\mathrm{I}$ is incorrect but Statement $\mathrm{II}$ is correct.
• D

  Both Statement $\mathrm{I}$ and Statement $\mathrm{II}$ are correct.

Hence, the correct answer is option: 'B'.