UGC-NET | UGC NET CS 2016 Aug - III | Question 9

Suppose database table T₁(P, R) currently has tuples {(10, 5), (15, 8), (25, 6)} and table T₂ (A, C) currently has {(10, 6), (25, 3), (10, 5)}. Consider the following three relational algebra queries RA₁, RA₂ and RA₃: 
RA₁ : T₁ ⨝ _{T1.P = T2.A} T₂ where ⨝is natural join symbol 
RA₂ : T₁ ⟕ _{T1.P = T2.A} T₂ where ⟕ is left outer join symbol 
RA₃ : T₁ ⨝ _{T1.P = T2.A and T1.R = T2.C}T₂ 
The number of tuples in the resulting table of RA₁, RA₂ and RA₃ are given by:

(A)

(B)

(C)

(D)