I'm using the pdfx package to generate PDF/A. I'm using as well the embedfile package to attach file to the PDF/A-3b.
Now my question is: Does PDF/A-3b requires PDF V1.7 or PDF V1.4?
\usepackage[a-3b,pdf17]{pdfx}
or
\usepackage[a-3b]{pdfx}
I'm using the pdfx package to generate PDF/A. I'm using as well the embedfile package to attach file to the PDF/A-3b.
Now my question is: Does PDF/A-3b requires PDF V1.7 or PDF V1.4?
\usepackage[a-3b,pdf17]{pdfx}
or
\usepackage[a-3b]{pdfx}