单项选择题
The Strategic Framework for smart grid mitigation can be summarized as ( ) .
A.
One goal, two main lines, three stages, four systems, five connotations and six links
B.
A main line, two goals, three stages, four systems, five links and six connotations
C.
One goal, two main lines, three stages, four systems, five links and six connotations
D.
A main line, two goals, three stages, four systems, five sweating and six links