If $R_1=\left\{\left(1,1\right)\left(2,2\right)\left(1,2\right)\left(2,1\right)\left(3,3\right)\right\}$  and $R_2=\left\{\left(1,1\right)\left(2,2\right)\left(2,3\right)\left(3,2\right)\left(3,3\right)\right\}$  are two relations in the set $S=\{1,2,3\}$ ,the incorrect statement is:

$R_1\cup R_2$  is an equivalence relations in S.

$R_1\cap R_2$  is an equivalence relations in S.

None of These

$R_1$ and $R_2$  both are equivalence relations in S.