Directions: Given below are statements (I) and (II). These statements may be either independent causes or may be effects of independent causes or a common cause. One of these statements may be the effect of the other statements. Read both the statements and decide which of the following answer choice correctly depicts the relationship between these two statements.  

1. The staff of Airport authorities called off the strike they were observing in protest against privatization.
2. The staff of Airport authorities went on strike anticipating a threat to their jobs.