R(A,B) has 100 tuples and S(B,C) has 200 tuples, where B is a foreign key in S referencing the candidate key B in R (every tuple in S has a…

R(A,B) has 100 tuples and S(B,C) has 200 tuples, where B is a foreign key in S referencing the candidate key B in R (every tuple in S has a matching, non-null value in R). How many tuples will the natural join R ⋈ S contain?