The system of dimensioning is generally adopted in large-sized drawing such as buildings, air-crafts and automobiles are off _________ method.

The system of dimensioning is generally adopted in large-sized drawing

1.	The system of dimensioning is generally adopted in large-sized drawing such as buildings, air-crafts and automobiles are off _________ method.
A.	Aligned method
B.	Unidirectional method
C.	Chain dimensioning method
D.	Combined dimensioning method
Answer» C. Chain dimensioning method