"Ms. is a general title that does not indicate marital status but is still feminine.
Mrs. is a traditional title used for a married woman."
I think I can address any woman as 'Ms.'
For example, if Mary Nelson is married to Peter Clark, she is 'Mrs. Clark,' but I can also call her 'Ms. Clark.'
However, my DH thinks this is incorrect because 'Clark' is the surname of Mary's husband, and we should not refer to her as 'Ms. Clark.'
So, what do you think? Who is correct?"