The slender column AB is exerted by an axial pressure force(see the figure). Assume the critical force of the column is P 1j , which of the following statements is correct?
A.
The axis of column AB will keep straight only as ,, and only compression deformation will be produced for the column.
B.
The axis of column AB will keep straight as , and there will be no bending deformation for the column.
C.
The column AB will not keep equilibrium as .
D.
Make in order to ensure the column AB is in equilibrium.