Consider the following statements for a power shovel?_x005F_x000D_(i) Output can be increased by reducing the angle of swing for a given depth of cut_x005F_x000D_(ii) For a given angle of swing, output will be maximum at optimum depth of cut_x005F_x000D_(iii) Output can be increased by keeping the depth of cut less than optimum depth_x005F_x000D_(iv) Output can be increased by increasing the size of shovel_x005F_x000D_select the correct statements?

• A. (ii), (iii) and (iv) are correct
• B. (i), (ii) and (iv) are correct
• C. (i), (iii) and (iv) are correct
• D. (i) and (iv) are correct