If the cold-worked material of 1 cm3 is enlarged in size of an auditorium(50*50*50m), the typical width of dislocation corresponding to this auditorium would be equivalent to _________

• A. the size of rope with thickness 1cm
• B. a rope width equal to 1m
• C. spider web thickness equal to 0.1mm
• D. invisible bacteria with width 1 nm