1.Which of the following is a null set?a.A={x:x>1 and x<1}A = \{x : x > 1 \text{ and } x < 1\}A={x:x>1 and x<1}b.B={x:x+3=3}B = \{x : x + 3 = 3\}B={x:x+3=3}c.C=∅C = \emptysetC=∅d.D={x:x≥1 and x≤1}D = \{x : x \ge 1 \text{ and } x \le 1\}D={x:x≥1 and x≤1}Login to continueOnly logged in users canattempt or see the solution.
