The slope between points A and C is $\_\_\_\_\_\_\_\_\_\_$ and is known as the $\_\_\_\_\_\_\_\_\_\_.$

$1\mathrm{.}33$; marginal rate of substitution $($MRS$)$

$+1\mathrm{.}33$; marginal rate of transformation $($MRT$)$

$2\mathrm{.}67$; marginal rate of substitution $($MRS$)$

$2\mathrm{.}67$; marginal rate of transformation $($MRT$)$