Which of the Following Statements Is NOT Correct? Reverse Repurchase

Which of the following statements is NOT correct? Reverse repurchase agreements made by the Reserve Bank of Australia (RBA) with the commercial banks:

A) are a form of secured borrowing by a bank.
B) are settled in ES funds.
C) are seldom used by the RBA for making temporary reserve injections in the banking system.
D) often use Treasury securities but some specific bank issued private securities can be accepted as well.