Four chairs (A, B, C, and D) are placed in a circle: A next to B, B next to C, C next to D, and D next to A. Each chair may be occupied (1) or empty (0). Give the min-term and maxterm expansion for each of the following logic functions: 

  

(a) F(A, B, C, D) is 1 if there are no adjacent empty chairs. 

(b) G(A, B, C, D) is 1 if there are at least three adjacent empty chairs. 

(c) H(A, B, C, D) is 1 if at least three chairs are full. 

(d) J(A, B, C, D) is 1 if there are more people sitting in chairs A and B than chairs C and D.