Which number should replace ‘?’ in the following series? 240, 120, ? , 180, 360, 900

 Which number should replace ‘?’

in the following series?

240, 120, ? , 180, 360, 900

(A)120

(B) 130

(C) 150

(D) more than one of the above

(E) None of the above 

Ans: (A)120

Explanation: