The correct answer is letter B. From the four given choices, Advanced Drawing Change Notice of ADCN is the official record of change to be made on a released drawing. In engineering, when a change is recorded or authorized, the change form should include different information – among of which is the things or drawing that need to be changed.
This change falls under ADCN because it is essential for people to be informed how and when the change will take effect most especially if they are going to be affected by these changes. A change can be caused by several factors such as a correction of a design error, change in material or the method of manufacturing and a change in the requirements needed for the product.