In the 1968 film 'Buona Sera, Mrs. Campbell,' what is the true identity of the character Salty and what role does he play in the storyline? (Advanced)
#1: Salty is actually one of Mrs. Campbell's former lovers and a music promoter who tries to win her affection again.
#2: Salty is the stage name of a famous singer whom Mrs. Campbell's daughter idolizes, causing tension in the family.
#3: Salty is a sailor who unknowingly fathers a child with Mrs. Campbell, with his identity concealed throughout most of the film.
#4: Salty is the nickname of Mrs. Campbell's loyal family dog that plays a symbolic role in the film's narrative.