Impure metal `'A'` is to be purified by electro-refining method. At which position is this impure metal placed in the electrolytic cell ?

Explanation

To solve the question regarding the placement of impure metal 'A' in the electrolytic cell during the electro-refining process, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Electrolytic Refining**:
- Electrolytic refining is a method used to purify metals. It involves the use of an electrolytic cell where an impure metal is refined.

2. **Identifying the Components of the Electrolytic Cell**:
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