![](https://cos-cdn.shuashuati.com/pipixue-wap/2020-1230-1107-56/ti_inject-812ce.png)
You can use a single derrick with double wire to discharge the heavy lifts below 5 tons
A.
A single derrick can be used for lifting heavy cargo of more than 5 tons
B.
A single derrick can be used for lifting heavy cargo of less than 5 tons
C.
The heavy derrick can be used with double wire
D.
The heavy derrick cannot be used with double wire