To generate the j th column of the flexibility matrix _____. | Civil Engineering MCQ's

A.    a unit force is applied at coordinate j and the displacements are calculated at all coordinates
B.    a unit displacement is applied at co-ordinate j and the forces are calculated at all coordinates
C.    a unit force is applied at coordinate j and the forces are calculated at all coordinates
D.    a unit displacement is applied at co-ordinate j and the displacements are calculated at all co-ordinates

Ans: A