A 315V, 3-phase 400 MVA alternator is running at unity power factor at constant excitations. The most appropriate representation in space domain is?

• A. <a href="https://www.sanfoundry.com/wp-content/uploads/2016/05/op-4a.png"><img alt="A 315V, 3-phase 400 MVA alternator at unity power factor at constant excitation - option a" class="alignnone size-full wp-image-124437" height="188" src="https://www.sanfoundry.com/wp-content/uploads/2016/05/op-4a.png" width="151"/></a>
• B. <a href="https://www.sanfoundry.com/wp-content/uploads/2016/05/op-4b.png"><img alt="A 315V, 3-phase 400 MVA alternator at unity power factor at constant excitation - option b" class="alignnone size-full wp-image-124438" height="261" src="https://www.sanfoundry.com/wp-content/uploads/2016/05/op-4b.png" width="157"/></a>
• C. <a href="https://www.sanfoundry.com/wp-content/uploads/2016/05/op-4c.png"><img alt="A 315V, 3-phase 400 MVA alternator at unity power factor at constant excitation - option c" class="alignnone size-full wp-image-124439" height="235" src="https://www.sanfoundry.com/wp-content/uploads/2016/05/op-4c.png" width="178"/></a>
• D. <a href="https://www.sanfoundry.com/wp-content/uploads/2016/05/op-4d.png"><img alt="A 315V, 3-phase 400 MVA alternator at unity power factor at constant excitation - option d" class="alignnone size-full wp-image-124440" height="152" src="https://www.sanfoundry.com/wp-content/uploads/2016/05/op-4d.png" width="84"/></a>