The length of the longest rod that can fit in a cubical room of 4 m side is?	Select:
A) 3:8
B) 3:1
C) 3:0
D) 3:2
E) 3:5
3:1   Answer:3:1
<result>B</result>
The length of the longest rod that can fit in a cubical room of 4 m side is?