Let S = {(x, y): x2 + y2 = 1, - 1 ≤ x ∈ R ≤ 1 and - 1 ≤ y ∈ R ≤ 1} Which one of the following is correct?

Let S = {(x, y): x2 + y2 = 1, - 1 ≤ x ∈ R ≤ 1 and - 1 ≤ y ∈

1.	Let S = {(x, y): x2 + y2 = 1, - 1 ≤ x ∈ R ≤ 1 and - 1 ≤ y ∈ R ≤ 1} Which one of the following is correct?
A.	S is a one - one function
B.	S is a many - one function
C.	S is a bijective mapping
D.	S is not a function
Answer» E.

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