18. A single phase transformer has specifications as \( 250 \mathrm{kVA}, 11000 \mathrm{~V} / 415 \mathrm{~V}, 50 \mathrm{~Hz} \). What are the approximately values of primary and secondary currents?
A. Primary \( =22.7 \mathrm{~A} \), Secondary \( =602 \mathrm{~A} \)
B. Primary \( =602 \mathrm{~A} \), Secondary \( =22.7 \mathrm{~A} \)
C. Primary \( =301 \mathrm{~A} \), Secondary \( =22.7 \mathrm{~A} \)
D. Primary \( =11.4 \mathrm{~A} \), Secondary \( =301 \mathrm{~A} \)
