Let A be the set of all lines in the plane. Define a relation R on A as follows. For every  l1  and  l2  in A,  l1 R l2  ⇔  l1  is parallel to  l2.  (Assume that a line is parallel to itself.) Which of the following is true for R? (Select all that apply.) R is reflexive.R is symmetric.R is transitive.R is neither reflexive, symmetric, nor transitive.

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