The FDIC's Use of Purchase and Assumption Resolution of Failed

The FDIC's use of purchase and assumption resolution of failed banks has resulted in de facto 100 percent deposit insurance because

A) all accounts up to $100,000 have been paid off by the FDIC.
B) the assuming bank assumes all deposits of the failed banks.
C) the assuming bank assumes all deposits up to $100,000.
D) the large accounts above $100,000 are assumed by the FDIC.