A Perfectly Competitive Firm Is Hiring Variable Resources M and N.It

A perfectly competitive firm is hiring variable resources M and N.It will minimize total costs

A) $\mathrm { MRP } _ { \mathrm { m } }$ /
$\mathrm { MFC } _ { \mathrm { m } }$ =
$\operatorname { MRP } _ { n }$ /
$\mathrm { MFC } _ { \mathrm { n } }$ .
B) $\mathrm { MRP } _ { \mathrm { m } }$ ?
$\mathrm { MFC } _ { \mathrm { m } }$ =
$\operatorname { MRP } _ { n }$ ?
$\mathrm { MFC } _ { \mathrm { n } }$ .
C) $\mathrm { P } _ { \mathrm { m } }$ /
$\mathrm { MPP } _ { \mathrm { m } }$ =
$P _ { n }$ /
$\mathrm { MPP } _ { \mathrm { n } }$ .
D) $\mathrm { MPP } _ { \mathrm { m } }$ /
$\mathrm { P } _ { \mathrm { m } }$ =
$\mathrm { MPP } _ { \mathrm { n } }$ /
$P _ { n }$ .