What is the initial rate at $[$ A

$]=0\mathrm{.}900$ M

$?$

$0\mathrm{.}120$ M$/$s

$6\mathrm{.}00\backslash$times $102$ M$/$s

$0\mathrm{.}360$ M$/$s

The reaction $AB$ has been experimentally determined to be second order. The initial rate is $0\mathrm{.}0100\frac{M}{s}$ at an initial concentration of $A$ of $0\mathrm{.}150M.$