Identify the type of polymer
-A-B-B-A-A-A-B-A-

Explanation

To identify the type of polymer represented by the sequence A-B-B-A-A-A-B-A, we can follow these steps:

### Step 1: Analyze the Polymer Structure
The given sequence is A-B-B-A-A-A-B-A. Here, we can see that there are two different types of monomers: A and B.

### Step 2: Count the Monomer Types
In the sequence:
- Monomer A appears 5 times.
...