The incorrect statement about $PH_3$ is:

• A
  It is produced by the hydrolysis of $Ca_3P_2$.
• B
  It gives a black precipitate $(Cu_3P_2)$ with $CuSO_4$ solution.
• C
  It spontaneously burns in the presence of $P_2H_4$.
• D
  It does not react with $B_2H_6$.