For the part shown, the ideal position of the cylindrical boss is located with the basic dimensions of 100 and 50. These basic dimensions are measured from which of the following? (Select one.)

i. The physical edges of the part.

ii. The high points on the physical edges of the part.

iii. The low points on the physical edges of the part.

iv. The theoretical datum planes B and C.

The basic dimensions are locating which of the following? (Select one.)

i. The physical location of the center axis of the boss.

ii. The center axis of the boss as determined by the actual mating envelope of the boss.

iii. The ideal location of the center axis of the tolerance zone specified by the position control.

If the part is produced and is being inspected, the location of the boss will be measured from which of the following? (Select one.)

i. The physical edges of the part.

ii. The high points on the physical edges of the part.

iii. The low points on the physical edges of the part.

iv. The theoretical datum planes B and C.

v. The datum feature simulators for datum features B and C.