What is 600 in Roman numerals?

To represent the number 600 in Roman numerals, we need to break down the components that make up that value. Roman numerals are based on specific letters representing certain values. The letter "D" corresponds to 500, while "C" corresponds to 100.

In constructing the number 600, we start with "D" for 500 and then add another "C" for 100. Therefore, we take the letter "D" (500) and follow it with the letter "C" (100), resulting in "DC".

This method of adding values is consistent in Roman numeral representation, where subsequent letters are added together to form larger numbers. Since we need to reach 600, the correct assembly yields "DC," which accurately reflects 500 plus 100 (500 + 100 = 600).

In contrast, other options do not align with the values they represent based on the principles of Roman numeral construction.