Determine whether the line integral of each vector field (in blue) along the oriented path (in red) is positive, negative, or zero

The answer in this question that determined the line integral of each vector field in blue along the semicircular, oriented path in red is a positive, negative or zero. 
Through the graph we will determined whether the line integral of each vector field is positive negative and zero. This is the answer in this question;
-Positive
-Negative
-Zero
-Negative
-Zero
-Zero