Please choose the correct answer to the question: Examine each of these chemical equations to determine which equation is correctly balanced.

Answer1: Mg(NO_{3})_{2} + K_{2}CO_{3} -> MgCO_{3} + KNO_{3} Answer2: Mg(NO_{3})_{2} + K_{2}CO_{3} -> MgCO_{3} + 2KNO_{3} Answer3: 2Mg(NO_{3})_{2} + K_{2}CO_{3} -> 2MgCO_{3} + KNO_{3} Answer4: Mg(NO_{3})_{2} + 2K_{2}CO_{3} -> MgCO_{3} + 2KNO_{3}

Answer format: answer1/answer2/answer3/answer4