After several lessons of adding three digit numbers with regrouping, some students are still making regrouping errors like the one shown above. During reteaching which of the following tips is most likely to help students develop a sense that their answers are reasonable? A."After you have computed your answer by hand, let the person next to you see your work and make any corrections"B."Do the problem one more time and see if your second answer is the same as your first."C."Write each addend using expanded notation. Add the expanding numerals, and then covert the expanded sum back to standard notation."D."Add the numbers given. Then, round each number to the nearest hundred and add those numbers. Compare your sums. They should be close to one another