Question

Consider the relation R(A,B,C,D,E) which satises the following functional dependencies:

AB → C
BC → D
CD → E
DE → A
AE → B

Which of the following functional dependencies are also guaranteed to be satised by relation R?
a) AC → D
b) BCD → A
c) C → E
d) A → C

Answer 1

some what difficult to answer

Answer 2

option c doubt.......