Match the following: List I (Laws of Boolean) List II (Relation algebra) A. Distributive law 1. x + x = x B. DeMorgans law 2. x(y + z) = xy + xz C. Idempotent law 3. (x) = x D. Involution law 4. (x + y) = xy

• A-1, B-2, C-3, D-4
• A-2, B-4, C-1, D-3
• A-3, B-4, C-1, D-2
• A-4, B-1, C-2, D-3