What is "chow mein" in your 'hood?

I'm curious.

Is it (A) stir-fried (chow) spaghetti-like noodles (mein) with bits of meat and/or veggies; or is it (B) a gloppy mass of veggies and corn starch to be served with rice and little crispy packaged noodles?

I don't recall encountering anything but (B) on the east coast. Same in Arizona. But here in SF, you ask for "chow mein" you get (A). If/when (B) is available (that's rare), it is called "chop suey" which, I believe, may have been invented hereabouts as food for the imported Chinese working on the railroads. "Chop suey" was also available back east but was somehow distinguished from "chow mein". I was never sure of the difference.