What is the value of surface finish obtained by using Ion beam machining?

• A. <1 ¬¨¬®¬¨¬µm
• B. <3 ¬¨¬®¬¨¬µm
• C. <5 ¬¨¬®¬¨¬µm
• D. <7 ¬¨¬®¬¨¬µm