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2. Find the necessary ending to the following sentence.

1. In some hydraulically operated excavators the revolving superstructure...

2. With extended telescopic boom...

3. With separate hydraulic motors for each track...

A. ...the machine can turn within its own length.

B. ...can be moved perpendicularly to the longitudinal axis of the machine in special guides.

C. ...the excavator can dig deeper trenches and discharge the spoil at greater heights.