Please someone should help make this clear to me!!!

Question

I encountered two different questions in the challenge section of html. I feel like at least one of them needs to be addressed.
The first says "is the forward slash(/) in the void elements optional or not?". The answer was yes it was optional.

Then comes the other question which was "which of the follwing is a valid code":
<img src="a.png" alt="">
<img src="a.png" alt=""/>
GOING BY THE ANSWER OF THE FIRST QUESTION, ARE THE OPTIONS OF THE SECOND QUESTION NOT SUPPOSED TO BE ALL CORRECT?

Answer 1

How we can tell without incomplete information.

Answer 2

what I mean is "are all the above options of question two not supposed to be correct?

Answer 3

The forward slash is used when you want to close a tag. So instead of writing the whole </img> tag, "/" shortcut is used. <img> does not require the closing tag. But in some occasions, it is required.

Answer 4

I think both are correct. The one with '/' is written following XHTML standard, the one without, is following HTML standard. In XHTML a pairless tag is written with a '/' as standard requirement.

I could be wrong, but if I were not, then a report on that question is in order. Except if the question was a multiple choice type, where both can be chosen.

Answer 5

it was a multiple choice question and only one could be chosen