The order of existence of three portions of water in a reservoir from the bottom to top is
(A) Useful storage + surcharge storage + dead storage
(B) Useful storage + dead storage + surcharge storage
(C) Dead storage + useful storage + surcharge storage
(D) Surcharge storage + useful storage + dead storage
(A) Useful storage + surcharge storage + dead storage
(B) Useful storage + dead storage + surcharge storage
(C) Dead storage + useful storage + surcharge storage
(D) Surcharge storage + useful storage + dead storage