An $86,000-$volt $60-$cycle $3-$phase $80-$mile line with $9-$ft equivalent spacing of conductors uses No$.3/0$ copper conductors. If the line is loaded with $4590$ kw at $0\mathrm{.}85$ lagging power factor, the sending$-$end current is approximately?

A $51\mathrm{.}1$ amps

B $30\mathrm{.}7$ amps

C $21\mathrm{.}9$ amps