A. 10
B. 13
C. 17
D. 19
🧠 Explanation (Math):
Given: X = 68000 decreasing 1200/yr; Y increasing 800/yr; when equal? Step 1: Relative closing rate = 1200 + 800 = 2000 per year Step 2: Years = (current difference)/2000 (data-dependent) Step 3: With implied difference 26000, years = 26000/2000 = 13 Final Answer: 13