1.Which of the following is not correct for relation RRR on the set of real numbers?a.(x,y)∈R ⟺ ∣x∣−∣y∣≤1(x, y) \in R \iff |x| - |y| \le 1(x,y)∈R⟺∣x∣−∣y∣≤1 is reflexive but not symmetric.b.(x,y)∈R ⟺ ∣xy∣≤1(x, y) \in R \iff |xy| \le 1(x,y)∈R⟺∣xy∣≤1 is reflexive and symmetric.c.(x,y)∈R ⟺ 0<∣x−y∣≤1(x, y) \in R \iff 0 < |x - y| \le 1(x,y)∈R⟺0<∣x−y∣≤1 is symmetric and transitive.d.(x,y)∈R ⟺ 0<∣x∣−∣y∣≤1(x, y) \in R \iff 0 < |x| - |y| \le 1(x,y)∈R⟺0<∣x∣−∣y∣≤1 is not transitive but symmetric.Login to continueOnly logged in users canattempt or see the solution.