The reaction of `Me_3CM_g Cl` and `Me_(3)C-overset(O)overset(||)(C )-Cme_(3)` after hydrolysis gives a `(A)` and a `2^@` alcohol `(B)` rather than the expected `tri-t-butyl` carbinol. Provide the structures of `(A)` and `(B)` with explanation.

Explanation

To solve the problem, we will analyze the reaction step by step, starting with the Grignard reagent and the ketone, followed by the hydrolysis process.

### Step 1: Identify the Grignard Reagent
The Grignard reagent given is `Me3C-MgCl`, which can be represented as:
- **Me3C**: This is a tert-butyl group (C4H9), and it has a negative charge on the carbon.
- **MgCl**: This is magnesium chloride, where magnesium carries a positive charge.

### Step 2: Identify the Ketone
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