If the margin brokerage firm re-pledges the client's securities, it is required to notify the SFC in writing under which of the following circumstances?

A、 For one consecutive week, the balance of the loan that has been withdrawn and outstanding exceeds 60% of the total amount.
B、 For two consecutive weeks, the balance of the loan that has been withdrawn and outstanding exceeds 60% of the total amount.
C、 For one consecutive week, the balance of the loan that has been withdrawn and outstanding exceeds 80% of the total amount.
D、 For two consecutive weeks, the balance of the loan that has been withdrawn and outstanding exceeds 80% of the total amount.