If you use alternative tools or equipment， it is the operator's responsibility to make sure that they give the same results and are as safe to the parts and personnel as the tools or equipment specified in the procedure
选项：

A:It is the responsibility of the operator to ensure that alternative tools or equipment can work well and are dangerous to the parts and personnel as the ones specified in the procedure if you use them.
B:If alternative tools or equipment are used，the operator must ensure that they can play the same role and are as safe as the tools or equipment specified in the procedure to the parts and personnel.
C:If the manufacturer can make sure that alternative tools or equipment can meet the requirement and are as safe to the parts and equipment as the ones specified in the procedure， you can use them.