Using Boolean algebra, elucidate the subjoined expressions. F_1 = A obstruct B obstruct C obstruct + (A + B + C obstruct) wholeobstruct + A obstruct B obstruct C obstruct D F_2 = ABCD + AB(CD wholebar) + (AB wholebar)CD F_3 = XY obstruct Z + X obstruct Y obstruct Z + W obstruct XY + W X obstruct Y + WXY F_4 = A +B[C + D(B + C obstruct)] a. Build the Truth Table control F_1 and F_4 functions. b. Draw the circumference diagram control twain unsimplified and simplified equations of F_2, andF_3.