Which of the following statements is correct ?

${\mathrm{BCl}}_3 \mathrm{and} {\mathrm{AlCl}}_3$ are both Lewis acids and ${\mathrm{BCl}}_3$ is stronger than ${\mathrm{AlCl}}_3$

${\mathrm{BCl}}_3 \mathrm{and} {\mathrm{AlCl}}_3$ both are Lewis acids and ${\mathrm{AlCl}}_3$ is stronger than ${\mathrm{BCl}}_3$

${\mathrm{BCl}}_3 \mathrm{and} {\mathrm{AlCl}}_3$ are both equally strong Lewis acids

Both ${\mathrm{BCl}}_3 \mathrm{and} {\mathrm{AlCl}}_3$ are not Lewis acids.