The question appears to relate to a mathematical problem involving estimation or approximation and is lacking sufficient context. An accurate answer requires additional details about lines A, B, C, and D to determine their relation to Teresa's statement about stacking dishes.
The main answer to the question would require more context, as the information provided does not specify lines A, B, C, or D. Teresa's statement about stacking 7 dishes is a mathematical problem that is likely to involve the interpretation of patterns or data represented by the lines mentioned.
the mathematical concept related to this question could involve averages, ratios, or proportions that relate to the number of dishes stacked. Since the question mentions 'reading between the lines', it suggests using estimation or approximation to find a solution that broadly fits Teresa's statement, even if it's not a perfect match to the data represented by lines A, B, C, or D.
To answer the question accurately, one would need the complete information that describes or visualizes what lines A, B, C, and D represent, in order to determine which line corresponds to Teresa's statement about stacking dishes.