It's stunning how many people seem to forget that there are other countries on the planet that use dollars and weren't involved in Vietnam. No, I'm not making an assumption. The person who posted this is Canadian.
Y'all really need to take a step back and reflect a little bit.
Are those phrases not interchangeable in Canada?
Saying "# grade" might be more common where I am in the US, but no one would bat an eye if you said "grade #" because that is used commonly enough as well that people are used to it.
They completely are. I have no idea what they're talking about...
I also don't know. That's why it was phrased as a question. I'm not from where you are from. I come from a different country. I asked you a question about a possibility based on my knowledge, and you just tried to gotcha me. What does that do for you? Make you feel superior?