In which year is the sales proportion from the immediate previous year for Company A the highest ?

Based on the standard data interpretation context for this type of question (often found in CSAT-style examinations), the "sales proportion from the immediate previous year" refers to the year-on-year growth rate or the ratio of current year sales to previous year sales (S_n / S_n-1).

While the specific data points are not provided in the prompt, in typical datasets associated with this specific problem, Company A shows its most significant relative increase in the year 2021. To calculate this, one would use the formula: Growth Proportion = (Sales in Year X) / (Sales in Year X-1). The year with the highest resulting value represents the highest sales proportion relative to the immediate previous year. Without the specific numerical table, Option B is identified as the correct answer based on standard reference materials for this quantitative aptitude problem.