下列反应中，不属于氧化还原反应的是（　　）

A．3CuS+8HNO₃=3Cu（NO₃）₂+2NO↑+3S↓+4H₂O

B．2Na₂O₂+2CO₂=2Na₂CO₃+O₂↑

C．2KMnO₄+5H₂C₂O₄+3H₂SO₄=K₂SO₄+2MnSO₄+10CO₂↑+8H₂O

D．2Na₂O₂+H₂SO₄=Na₂SO₄+H₂O₂

With respect to the Standards of Professional Conduct relating to diligence and reasonable basis, which of the following statements is least accurate A member needs to:

A. ensure that his firm has standardized criteria for reviewing external advisers.
B. have an understanding of the parameters used in the model or quantitative research.
C. dissociate from team research reports that do not reflect the member's opinion.