How much material should be left for the finish grind on each surface of the v block?

How much material should be left for the finish grind on each surface of the v block?
 
  A) .0005 inch B) .010 inch C) .015 inch D) .003 to .005 inch

 Q. 2

When grinding the v in your v block, what critical caution should you observe?
 
  A) You should be cautious in grinding with the side of the grinding wheel
  B) You should shape the grinding wheel to form the v
  C) You should not make contact with the side of the grinding wheel
  D) No special caution is needed

 Q. 3

If grinding in or truing the grinder chuck becomes necessary, how do you determine when the surface has been trued?
 
  A) Apply pencil lines to the chuck and grind until they disappear
  B) Grind and then indicate
  C) Don't grind the chuck, use shims instead
  D) You just uniformly take .001 in. off the surface