Which of the Following Statements Concerning Boron Compounds Is Incorrect

Which of the following statements concerning boron compounds is incorrect?

A) More than 20 neutral boron hydrides (general formula B_xH_y) are known.
B) The two boron atoms in B₂H₆ are connected by three-center,two-electron B-H-B bridges.
C) Borax,Na₂B₄O₇⋅10 H₂O,is used as a low-melting flux in metallurgy.
D) Sodium borohydride,NaBH₄,is a reducing agent used in organic chemistry.
E) Diborane,B₂H₆,is used as an oxidizing agent in organic chemistry.