反应后没有颜色变化的是

A．酚与FeCl₃溶液

B．淀粉与碘水

C．酸性K₂Cr₂O₇溶液与C₂H₅OH　　

D．C₃H₇Cl与NaOH溶液

—Do you know that girl, Peter?

—______, I don't know her. [ ]

A. Yes

B. Sorry

C. Yeah

D. Excuse me