Which of the following are examples of aldol condensation ?
A. `2CH_(3)CHOoverset("dil. NaOH")rarrCH_(3)CHOHCH_(2)CHO`
B. `2CH_(3)COCH_(3)overset("dil." NaOH)rarrCH_(3)CHOHCH_(3)CH_(2)COCH_(3)`
C. `2HCHO overset("dil. NaOH")rarrCH_(3)OH`
D. `C_(6)H_(5)CHO+HCHOoverset("dil. NaOH")rarrC_(6)H_(5)CH_(2)OH + HCOCH`
