Explanation:

The correct answer is:

(B) ii ✅

Explanation:

Code (i) is incorrect ❌

<b><i>is in error as tags cross</b></i>

• Incorrect because the tags "cross": The <b> (bold) tag is opened first, then <i> (italic) starts inside it. However, when closing, <b> is closed before <i>, causing an improper tag nesting.
• This is not valid HTML.

Code (ii) is correct ✅

<b><i>is not since tags nest</i></b>

• Correct because the tags "nest" properly: <b> starts first, <i> starts inside it, and closing follows the same order (first <i> closes, then <b> closes).
• This follows proper tag nesting rules in HTML.

Why other options are incorrect?

• (A) i → Wrong, because only ii is correct.
• (C) i and ii → Wrong, because i is incorrect.
• (D) None of the mentioned → Wrong, because ii is correct.

Thus, the correct answer is (B) ii ✅.