opening files on my iMac from an external cd
I put the cd into the external cd drive. The disc shows up on my desk top. I right click on the cd icon and it opens in a box . I right click on the info I want "CT ini" and Adobe Acrobat Reader comes up as a choice or I can pick something from the app store or it says other. I click on Adobe Acrobat Reader and I get the message
"Adobe Acrobat Reader could not open CT ini because it is either not a supported file type or the file has been damaged. (for example, it was sent as an e-mail attachment and wasn't correct decoded." It was a cd not an email. My problem is that I have 9 discs to open on my computer. They are from a hospital and include radiology information. The first time I got them I could not open anything at all so I called the hospital and a very nice man said he would resent them so they would open on a Mac and they would be unencrypted. I received them on Friday and got the same message from Adobe listed above. I called yesterday and spoke to him and he said someone encrypted them after he made them. He said he would send them again. I got them this morning and I get the same message again from Adobe. Can I open them with something other than Adobe? I hate to have to call him again. I am perplexed. Please help me.
iMac 21.5″, macOS 10.13