-- U.S. company Berkshire Hathaway (Sao Paolo: BERK34.SA - news ) to acquire U.S. personal care and cosmetics company Procter & Gamble's Duracell battery unit (notified June 23/deadline July 29)
Take context from the input text and decide on the accurate relationship between 'Duracell' and 'Berkshire Hathaway' from the options provided.
Options: parent organization, owner of, subsidiary, director/manager