Find an infinite set A such that a. A is finite and b. A is infinite. Use the real numbers R as the universal set. a. Which of the following is an infinite set A for which A is finite? OA. A= (x|x**, XER) OB. A= A = {x | 7/13€ EN, XER OC. A={x|x²-2x-1=0, XER} OD. A={X|XEN) b. Which of the following is an infinite set A for which A is infinite? OA. A={x|x²-2x-1=0, XER} OB. A={x|x#, XER} X A = {x | 7/13 - OD. A= {x|XEN} OC. A= -1 = x, XER

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