Gate question on functional dependency


The following functional dependencies are given:
AB → CD,
AF → D,
DE → F,
C → G ,
F → E,
G → A

Which one of the following options is false?
a) CF+ = {ACDEFG}
b) BG+ = {ABCDG}
c) AF+ = {ACDEFG}
d) AB+ = {ABCDFG}


AB+ = ABCD+ = ABCDG i think d,I always check from the last in these kind of questions,


ya im also getting same