Option B. It is reduced form of option A which is same as the given set of FDs. We can get all FDs by taking closure of FDs in B.
Options C and D are wrong as $G \to F$ is not a FD which can be deduced from the given set of FDs. (Only $E \to F$ is there and $E$ is not in the RHS of any FD meaning no other attribute can determine $F$).
