Armstrong (1974) proposed systematic approach to derive functional dependencies. Match the following w.r.t. functional dependencies:List - I a. Decomposition rule b. Union rule c. Composition rule d. Pseudo transitivity rule List - IIi. If X ? Y and Z ? W then {X, Z} ? {Y, W}ii. If X ? Y and {Y, W}?Z then {X, W} ? Ziii. If X ? Y and X? Z then X ? {Y, Z}iv. If X ? {Y, Z} then X ? Y and X ? Z Codes: a b c d

• A. iii ii iv i
• B. i iii iv ii
• C. ii i iii iv
• D. iv iii i ii