The value of -7 ÷ [5 + 1 ÷ 2 - {4 + (4 of 2 ÷ 4) + (4 ÷ 4 of 2)}] is:

• A. - 7
• B. \(- \frac{7}{2}\)
• C. 7
• D. \( \frac{7}{2}\)