The correct option is B On the grave of Mumtaz in the Taj Mahal.
The Taj Mahal is a mausoleum of white marble, built in Agra between 1631 and 1648 by order of the Mughal emperor Shah Jahan in memory of his favourite wife, Mumtaz Mahal. It is one of Seven Wonders of the World and a UNESCO World Heritage site. The grave of Mumtaz lies in the centre of Taj. A beautiful saying is inscribed on one of its arches – "Pious hearts are welcome in the garden of Paradise."