Arrange in Order the Steps That Lead to the Formation

Arrange in order the steps that lead to the formation of a kidney stone according to the second theory of the formation of renal calculi (A-E). (Enter the letter of each step in the proper sequence; do not use commas or spaces.)
A) The calculus erodes through the urothelium of the renal pelvis.
B) Calcium phosphate compound collects layers of collagenous material and cellular debris.
C) Calcium phosphate deposits in the renal papilla.
D) The plaque collects layers of crystalline elements to become a calculus.
E) Randall plaque forms within the subepithelial membrane.