CONCEPT Maxterm: A sum (OR) of n Boolean variables or its complement but not both, in a Boolean function of n variables, is called a maxterm K map: The K-map is a graphical method that provides a systematic method for simplifying and manipulating the Boolean expressions or to convert a truth table to its corresponding logic circuit in a simple, orderly process. In an 'n' variable K map, there are 2n cells For 4 variables there will be 24 = 16 cells as shown: [ alt="F2 S.B 23.7.20 Pallavi D3" src="//storage.googleapis.com/tb-img/production/20/07/F2_S.B_23.7.20_Pallavi_D3.png" style="width: 185px; height: 209px;"> Analysis: Given that f(A,B,C,D) = π M(0,1,3,4,5,7,9,11,12,13,14,15 ) from the K- map it is given by [ alt="F2 Neha B 24.5.21 Pallavi D10" src="//storage.googleapis.com/tb-img/production/21/05/F2_Neha%20B_24.5.21_Pallavi_D10.png" style="height: 216px; width: 251px;"> f (A, B, C, D) = A̅ CD̅ + AB̅D̅ By using Dulaity property . → + + → - Q̅ → Q Q → Q̅ we get (A + C̅ + D)(A̅ + B + D) ​Hence option (1) is correct