The meaning of "cold ship" in this course is .1) The ship's ambient temperature is lower; 2) Engine room temperature is lower; 3) Engine room valves are in default state; 4) There is no electricity in the engine room; 5) Ship has no power; 6) The temperature of equipment and system is the same as the ambient temperature.
选项：

A:1) 2) 3) 4);
B:2) 3) 4) 6);
C:3) 4) 5) 6);
D:1) 2) 4) 6)