Evaluate the line integral along the curve C.
ds , C is the path given by:C1: r(t) = (4 cos t)i + (4 sin t)j from (4, 0, 0) to (0, 4, 0)C2: r(t) = (4 sin t)j + (4 cos t)k from (0, 4, 0) to (0, 0, 4)C3: r(t) = (4 sin t)i + (4 cos t)k from (0, 0, 4) to (4, 0, 0)
A. 0
B. 
C. - 
?
D. 
?
Answer: B
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