1. Let's start with Section A, Question 1. Please provide the specific problem statement for Q1 so I can solve it step-by-step. 2. Next, for Section A, Question 2, please share the problem details to proceed with the solution. 3. Finally, for Section A, Question 3, provide the question so I can work through it carefully. Please send each question's text or math problem, and I will solve them separately as requested.