A 2000/1000/500 three winding transformer is to be used as auto transformer with supply of 3000 V. Two loads of 1050 kVA at 3500V, and other one at 180 kVA at 1000V. The circuit representing the mentioned application is?

• A. <a href="https://www.sanfoundry.com/wp-content/uploads/2017/05/electrical-machines-problems-q1a.png"><img alt="Three winding transformer used as auto transformer with supply of 3000 V - option a" class="alignnone size-full wp-image-161194" height="179" src="https://www.sanfoundry.com/wp-content/uploads/2017/05/electrical-machines-problems-q1a.png" width="300"/></a>
• B. <a href="https://www.sanfoundry.com/wp-content/uploads/2017/05/electrical-machines-problems-q1b.png"><img alt="Three winding transformer used as auto transformer with supply of 3000 V - option b" class="alignnone size-full wp-image-161195" height="179" src="https://www.sanfoundry.com/wp-content/uploads/2017/05/electrical-machines-problems-q1b.png" width="300"/></a>
• C. <a href="https://www.sanfoundry.com/wp-content/uploads/2017/05/electrical-machines-problems-q1c.png"><img alt="Three winding transformer used as auto transformer with supply of 3000 V - option c" class="alignnone size-full wp-image-161196" height="181" src="https://www.sanfoundry.com/wp-content/uploads/2017/05/electrical-machines-problems-q1c.png" width="300"/></a>
• D. <a href="https://www.sanfoundry.com/wp-content/uploads/2017/05/electrical-machines-problems-q1d.png"><img alt="Three winding transformer used as auto transformer with supply of 3000 V - option d" class="alignnone size-full wp-image-161197" height="189" src="https://www.sanfoundry.com/wp-content/uploads/2017/05/electrical-machines-problems-q1d.png" width="300"/></a>