A.
Constructing derived Constructing base1 Constructing base2 Constructing base
B.
Constructing derived Constructing base1 Constructing base2 Constructing base Constructing base
C.
Constructing base Constructing base Constructing base1 Constructing base2 Constructing derived
D.
Constructing base Constructing base1 Constructing base2 Constructing derived