BOSTON/NEW YORK Aug 6 Billionaire investor William Ackman's success at Mondelez International Inc may depend largely on a calculation that nimbler rival Kraft Heinz Co will soon snap up the maker of Cadbury chocolate and Oreo cookies, sources familiar with Ackman's approach said.
Take context from the input text and decide on the accurate relationship between 'Kraft Heinz' and 'Cadbury' from the options provided.
Options: subsidiary, owner of, chief executive officer, director/manager