With respect to relational algebra, which of the following operations are included from mathematical set theory?

Set theory contain operation e.g. union, intersection,set difference, Cartesian product, complementation and ,power set.

https://www.cs.sfu.ca/~ggbaker/zju/math/set-oper.html

https://en.m.wikipedia.org/wiki/Set_theory

ans- b Intersection and Cartisian product