_______ piers are used, when the height of pier is large as in case of viaducts, fly overs.$

_______ piers are used, when the height of pier is large as in case of

1.	_______ piers are used, when the height of pier is large as in case of viaducts, fly overs.$
A.	Column Bent
B.	Pile bent
C.	Trestle bent
D.	Abutment pier
Answer» D. Abutment pier