Which two numbers and two signs can be interchanged so as to balance the given equation ?16 × 4 + 12 ÷ 4 - 15 = 59

• A. 4 and 12; × and ÷
• B. 16 and 12; + and -
• C. 15 and 16; × and +
• D. 12 and 15; ÷ and -