A. Locate the digit in the thousands place. If it is 5 or greater, add 1 to this digit and replace every digit to its right by zero. If it is less than 5, replace it and every digit to the right by zero.
B. Locate the digit in the thousands place. Identify the digit to its right. If it is 5 or greater, add 1 to the digit in the thousands place and replace every digit to its right by zero. If this digit is less than 5, replace it and every digit to the right by zero.
C. Locate the digit in the thousands place. Identofy the digit to its left. If it is 5 or greater, add 1 to the digit in the thousands place and replace every digit to its right by zero. If this digit is less than 5, replace it and every digit to the right by zero.
D. Locate the digit in the thousands place. Identofy the digit to its right. If it is less than 5, add 1 to the digit in the thousands place and replace every digit to its right by zero. If this digit is 5 or greater, replace it and every digit to the right by zero.