When `CH_(3)CHO` is reacted in the presence of a base with excess of HCHO, which statement is true ?
A. Only aldol-type (Claisen-schmidt) reaction takes place.
B. Only Cannizzaro-type (crossed Cannizzaro) takes place.
C. First aldol-type and then Cannizzaro-type reaction takes place.
D. Fiest Cannizzaro-type and then aldol-type reaction takes place.
