Which of the following reactions is/are not feasible :
A. `CH_(3)COONa + NCOOH to CH_(3)COOH + NCOONa`
B. `CH_(3)COONa+Ph-OH to CH_(3)COOH + PhONa`
C. `NH_(2)-overset(CH_(2))overset(||)C-NH_(2)+NH_(2)-overset(o+)overset(NH_(2))overset(||)C-NH_(2) to NH_(2)-overset(CH_(2))overset(||)C-overset(o+)NH_(2)+NH_(2)-overset(NH)overset(||)C-NH_(2)`
D.
