Which of the Following Makes a Security Interest Created Under

Which of the following makes a security interest created under Article 9 a floating lien?

A) The provision that,unless otherwise agreed,a security agreement gives the secured party a security interest in the proceeds if the collateral is sold,exchanged,collected,or otherwise disposed of
B) The provision that,unless otherwise agreed,a security agreement fails to give the secured party a security interest in the proceeds if the collateral is sold,exchanged,collected,or otherwise disposed of
C) The provision that,unless otherwise agreed,interest rates will vary depending on the prime rate of interest
D) The provision that,unless otherwise agreed,the parties will not sell,exchange,collect,or otherwise dispose of property and that if such an action is taken,all sums owed become immediately due