Reading 22 EOC Q2

Reading 22 EOC Q2 (Page 110, Book 2) Shouldn’t Net profit margin also decrease due to increase in depreciation expense (Option A)? I understand why C would be correct, but why will ‘A’ not be correct? May be I am missing something.

I don’t have the book in front of me but check CFAI errata I think this might be one that was incorrect

Yup, it is covered in Errata. Thanks!,1237500