Answer:
"$127.11 per unit" is the correct approach.
Step-by-step explanation:
The activity cost as per the questions will be:
Activity 1:
=

=
($)
Activity 2:
=

=
($)
Activity 3:
=

=
($)
Now,
The overhead cost for digital cameras will be:
=

=

=
($)
Per unit overhead cost will be:
=

=
($)
hence,
The total cost will be:
=

=

=
($)