padi IDC theory – SCUBA equipment

Q5
An environmental seal is used for?
d)   Both “B” and “C” are correct

Q6
When using dive computers you should follow these guidelines:
a)    Each diver should have their own computer
b)   If the computer malfunctions, ascent to an extended safety stop
c)    Dive on the most conservative computer
d)   All of the above are correct