Consider the following steps:
`Cu_(2)S overset("roast in air")rarr A overset("Heating without air")rarr B` Which is not the correct statement:

Options

A. it is self-reduction
B. A is only `Cu_(2)O & B` is a mixture of `Cu & SO_(3)`
C. A is a mixture of `Cu_(2)O` and `Cu_(2)S` and `B` is a mixture of `Cu & SO_(2)`
D. all are incorrect statements

Answer

B