Blurring or interpolation issue when inserting exported EMF image plots into Powerpoint or Word

Hi,

I have attached two zipped EMF images (A, B) exported from Igor image plots. When I insert (B) into Powerpoint or Word 2010, the inserted image looks like the same as I see in a image viewer. But the other (A) gets blurred when inserted. I don't have any clue on this. I want to avoid the blurring. Could anyone give me help?

I am using Igor Pro 6.10A. Thank you in advance!

Sunmin EMF.zip