1.  If C is the (positive) contour | z | = 4, then
(a) True   ; (b) False   .

2.  If C is the (positive) contour | z | = 1, then
(a) True   ; (b) False   .

3. If C is the (positive) contour | z | = 4, then
(a) True   ; (b) False   .

4. If C is the (positive) contour | z | = 1, then
(a) True   ; (b) False  .