Consider relation R(A, B, C, D, E, F) with the following functional dependencies: A CDF, D + A and DF + E. We decompose R into two relations, S(A, B, C, D) and T(D, E, F). (a) (1 point) Is this decomposition a lossless decomposition? Briefly justify your an- swer. (b) (1 point) Is this decomposition a dependency-preserving decomposition? Briefly justify your