The major organic product which results when
PhCHO
is treated with the follo reagents: 1.
CH_(3)CH_(2)MgBr
; 2.
H_(3)O+;3.Na_(2)Cr_(2)O,H_(2)SO_(4)
is: A.
PhCOCH
B.
PhOCH_(2)CH_(3)
C.
PhCH_(2)COCH_(3)
D.
PhCOCH_(2)CH_(3)