Pareto's marginal condition for efficiency in composition of output (product-mix) requires
1
MRTS\(\rm _{L, K}^{X}\) = MRTS\(\rm _{ L, K}^{Y}\) = MRTS\(\rm _{L, K}^Z\)
2
MRS\(\rm _{X, Y}^A\) = MRS\(\rm { }_{X, Z}^A\) = MRS\(\rm _{X, Z}^B\)
3
MRTPX, Y = MRS\(\rm_{X, Y}^A\) = MRRS\(\rm _{X, Y}^B\)
4
MRTS\(\rm _{L, K}^{Y}\) = MRS\(\rm _{X, Y}^{A}\) = MRS\(\rm _{X, Y}^Z\)