A Pareto Optimum Requires
A) $M R T _ { L , C } = M P _ { N }$

A Pareto optimum requires

A) $M R T _ { L , C } = M P _ { N }$ .
B) $M R S _ { L , C } =$ TFP.
C) $M P _ { \mathrm { n } } = w$ .
D) $M P _ { \mathrm { n } } =$ slope of $P P F$ .
E) $M R S _ { 1 , \mathrm { c } } = M P _ { K }$ .