A. 4X0.7X6X160X300+2X0.7X6X160X180
B. 4X0.7X6X160X(300-10)+2X0.7X6X160X180
C. 4X0.7X6X160X(300-10)+1.22X2X0.7X6X160X180
D. 4X0.7X6X160X(300-2X6)+1.22X2X0.7X6X160X180
A. 4X0.7X6X160X300+2X0.7X6X160X180
B. 4X0.7X6X160X(300-10)+2X0.7X6X160X180
C. 4X0.7X6X160X(300-10)+1.22X2X0.7X6X160X180
D. 4X0.7X6X160X(300-2X6)+1.22X2X0.7X6X160X180