Which of the following is not correct ?

Options

A. `A sube A^c` If and only If` A=theta`
B. `A^c sube A`if and only if `A=X` , where X is a universal set
C. `If `A uu B= A uu C`, then B=C
D. A=B is equivalent to `A uu C`=`B uu C `and `A nn B=B nn C`

Answer

C