At a certain location in an electric system, the available fault MVA is 400 MVA. A 15 MVA,
34.5kV/6.24kV, 2.5% impedance, wye-wye grounded transformer is installed at that location. Determine the short circuit MVA at the secondary.
A. 195MVA
B. 150MVA
C. 90MVA
D. 240 MVA