Which two statements about the spanning-tree operation of this switch are true? (Choose two.)

Which two statements about the spanning-tree operation of this switch are true? (Choose two.)
A . The switch is operating in the default Cisco spanning-tree mode.
B . The spanning-tree operation mode for this switch is PVST+.
C . The spanning-tree operation mode for this switch is PVS
E . The spanning-tree mode stp ieee command was entered on this switch.
F . The spanning-tree operating mode for this switch is IEEE

Answer: DE