What is the formula of the specific electric loading?

• A. specific electric loading = total armature ampere conductors * armature periphery at air gap
• B. specific electric loading = total flux around the air gap / area of flux path at the air gap
• C. specific electric loading = total armature ampere conductors / armature periphery at air gap
• D. specific electric loading = total flux around the air gap * area of flux path at the air gap