Which of the following relations is correctly decomposed into the minimal number of relations that are collectively in BCNF (Boyce Codd Normal Form)? a) R(ABCDE) FD's: E A; D E; BC D into R1(BCD), R2(DEA) b) R(ABCD) FD's: C D; C A; B C into R1(BC), R2(ACD) c) R(ABCD) FD's: AB D; D C into R1(CD), R2(ABC) d) R(ABCDE) FD's: B CD; A E into R1(ABCDE), R2(AE)