I said I needed a C battery for an old clock at home but didn't find it there among all the batteries they had. I said I would have to go home and check for sure and just come back. She asked if I was needing a C or D and I replied, "C" She asked me to show her where I looked and that they usually had C batteries. I continued my chattering as we went to the battery display. "I need a C but you only have C2 or C4 and I'm not sure." I pointed to the packages. And she very courteously told me the 2 and 4 were only the number of the batteries in the packages, they were C batteries. I smacked myself upside my forehead and grinned. Who knew? Obviously not me. I attribute this to widow brain fog a condition that seems to emerge every so often even after 3 years., When Jerry was alive and I did something this lame he'd laugh and shake his head. I bet that the hardware store lady had a good laugh the rest of the day telling this story!
One of my widow friends laughed with me and said she would have done the same thing, reminded me that we have lifetimes of things to learn now that our husbands always handled. So true, no wonder we get confused. AND +: 
