For the reaction A + 3B→C , select the correct statement

Units for rate of reaction are independent of order of reaction

Rate law must be $\mathrm{r}=\mathrm{k}\left[\mathrm{A}\right][\mathrm{B}{]}^3$

$\frac{3 \mathrm{d}\left[\mathrm{C}\right]}{\mathrm{dt}}=\frac{\mathrm{d}\left[\mathrm{A}\right]}{\mathrm{dt}}$

$\frac{\mathrm{d}\left[\mathrm{C}\right]}{\mathrm{dt}}=\frac{-\mathrm{d}\left[\mathrm{A}\right]}{\mathrm{dt}}$