Subtree wrote 2 1/6 + 1 3/4 = 3 4/10. Which statement is true? A. Aubree's equation is correct because the sum of 2 1/6 and 1 3/4 is about 3. B. Aubree's equation is correct because the sum of 2 1/6 and 1 3/4 should be about 3 1/2. C. Aubree's equation is incorrect because the sum of 2 1/6 and 1 3/4 should be about 3. D. Aubree's equation is incorrect because the sum of 2 1/6 and 1 3/4 should be about 4.