Arrange the major developments in Harappan Archaeology in a chronological order:
(A) Report of Alexander Cunningham on Harappan seal.
(B) S.R. Rao begins excavations at Lothal.
(C) Daya Ram Sahni begins excavations at Harappa.
(D) Vasant Shinde begins archaeogenetic research at Rakhigarhi.
Choose the correct answer from the options given below: