What is the outcome of the SHUTDOWN ABORT command?

What is the outcome of the SHUTDOWN ABORT command?

A.
Pending transactions are committed and the database is closed.

B.
Dirty buffers in the buffer cache and unwritten redo are not written to the data files and redo log files
respectively.

C.
Uncommitted transactions are rolled back

D.
Instance recovery must be requested by the DBA at the next startup