Step 1:
Micro environmental factors are forces close to the company affecting its ability to serve customers.
Step 2:
These include:
• Suppliers
• Competitors
• Customers
• Public
Step 3:
Demographic environment belongs to macro environment, not micro environment.
Thus:
\[
C = \text{Incorrect}
\]
Step 4:
Correct factors are:
\[
A,\; B,\; D,\; E
\]
Hence, the correct answer is:
\[
\boxed{\text{(3) A, B, D and E only}}
\]