which of these groups is characteristic of thiols?

which of these groups is characteristic of thiols?
Answer
Brief Explanations:
Thiols are characterized by the presence of a sulfhydryl group (-SH). In the given molecular - group options, we need to identify the one with the -SH group.
Answer:
E. Option with sulfhydryl group (assuming the group labeled E in the image contains the -SH group)