MHT CET Physics question

An A.C. ammeter is used to measure current in a circuit. When a given direct current passes through the circuit, the A.C. ammeter reads 3 A. When another alternating current passes through the circuit, the A.C. ammeter reads 4 A. Then the reading of this ammeter, if D.C. and A.C. flow through the circuit simultaneously, is

• (A)3 A
• (B)4 A
• (C)7 A
• (D)5 ACorrect