The Sanchi Stupa complex has survived due to:

(A) The decisions of Shahjahan Begum and Sultan Jehan Begum
(B) The good luck in escaping the eyes of railway contractors and builders
(C) The good luck in escaping the eyes of those looking for finds to carry away to the museums of Europe
(D) The steps taken by the British government to conserve the Stupa
​(E) The steps taken to demarcate it as a residential building.
Choose the correct answer from the options given below :