See the multi-choice question below:

Sentence 1: Though he worked with the Kal, Ca'daan listened to the words of the two men as they talked, circled, and dueled in a clearing of the brush grass near Susan's rock.

Sentence 2: Ca'daan and Kal worked together.

If the first sentence is true, then is the second sentence true?
Choose from: I. yes II. it is not possible to tell III. no
I.