Which of the following is/are state function / functions?_x005F_x000D_ 1. q + w_x005F_x000D_ 2. q_x005F_x000D_ 3. w_x005F_x000D_ 4. H -TS_x005F_x000D_ Select the correct answer using the code given below.

• A. 1 and 4 only
• B. 1, 2 and 4
• C. 2, 3 and 4
• D. 1 only