Select the correct choice below and, it necossary, fill in the answer box to complete your choice. A. $$ \lim _{x \rightarrow 7} x(x-4)=\square $$ (Simplify your answer.) OB. The limit does not exist.

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**A.** $$ \lim _{x \rightarrow 7} x(x-4) = 21 $$

**Explanation:**

To evaluate the limit $$ \lim _{x \rightarrow 7} x(x-4) $$, substitute $$ x = 7 $$ directly into the expression:

$$
7 \times (7 - 4) = 7 \times 3 = 21
$$

Therefore, the limit exists and is equal to **21**.
The limit is 21.

Select the correct choice below and, it necossary, fill in the answer box to complete your choice. A. \( \lim _{x \rightarrow 7} x(x-4)=\square \) (Simplify your answer.) OB. The limit does not exist.

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