In the equation, ( int_{L} sigma^T epsilon( phi)Adx - int_{L} phi^T f Adx - int_{L} phi^Tdx sum_{i} phi_i P_i=0 ) First term represents _______

In the equation, ( int_{L} sigma^T epsilon( phi)Adx - int_{L} phi^

1.	In the equation, ( int_{L} sigma^T epsilon( phi)Adx - int_{L} phi^T f Adx - int_{L} phi^Tdx sum_{i} phi_i P_i=0 ) First term represents _______
A.	External virtual work
B.	Virtual work
C.	Internal virtual work
D.	Total virtual work
Answer» D. Total virtual work