Which of the following descriptions about call reconstruction is correct? (Multiple choice)

Which of the following descriptions about call reconstruction is correct? (Multiple choice)
A . The call reestablishment process refers to a process for the MS to restore the connection after the wireless link fails.
B. Call re-establishment may occur in a new cell or new location area.
C. Short message service can perform call reestablishment.
D. Whether to attempt call re-establishment depends on the call state and whether the cell allows call re-establishment.

Answer: ABD