What is the range of comparator in bench micrometer with dial comparator?

• A. ¬¨¬®¬¨¬±50 ¬¨¬®¬¨¬µm
• B. ¬¨¬®¬¨¬±100 ¬¨¬®¬¨¬µm
• C. ¬¨¬®¬¨¬±150 ¬¨¬®¬¨¬µm
• D. ¬¨¬®¬¨¬±200 ¬¨¬®¬¨¬µm