A mild steel flat 3 m long 150 mm wide and 15 mm thick carries an axial tensile load of 150 kN. If the value of u for mild steel is 0.3, it can be concluded that
[A].
length, width and thickness all will elongate
[B].
length and width will increase but thickness will decrease
[C].
length and thickness will increase but width will ecrease
[D].
length will increase but width and thickness will decrease