1 ÷ [1 + 1 ÷ {1 + 1 ÷ (1 ÷ 1)}] = ?  Choose the correct choice from the following answers:
A) 5/3 B) 4/3 C) 2/3 D) 1/3 E) 1/5
Explanation:   1 ÷ [1 + 1 ÷ {1 + 1 ÷ (1 ÷ 1)}]   = 1 ÷ [1 + 1 ÷ {1 + 1 ÷ 1}]   = 1 ÷ [1 + 1 ÷ {1 + 1}]   = 1 ÷ [1 + 1 ÷ 2]   = 1 ÷ [1 + (1/2)] = 1 ÷ 3/2 = 1 × 3/2 = 1 × 2/3 = 2/3   Answer: Option 2/3
<result>C</result>
1 ÷ [1 + 1 ÷ {1 + 1 ÷ (1 ÷ 1)}] = ?