U know u want to answer this riddle!!!!

Weekly Riddle #1
A wealthy man is murdered in a round house, only 7 people could have possibly murdered him. The butler, who says he was ordering the servants around
The chef, who says he was polishing knives
The maid, who says she was dusting the corners
The slave, who says he was picking tomatoes
The servant, who says he was setting the table
The wife, who says she was counting money
The daughter, who says she was outside smoking

Who murdered the the wealthy man? (comment what u think, ill post the answer next week)