WES asked for my diploma — do I send just the diploma or the diploma + transcript translated, and does the translator decide it's a "Bachelor's"?

I'm starting a WES evaluation for grad school applications and I'm tangled up on what actually needs translating. My degree is from outside the US (the diploma itself is in another language), and I keep seeing people say "just translate the diploma" while others say send the transcript too. There's also a Diploma Supplement that came with mine and I have no idea if that's part of the translation or not. The part I really can't figure out: when it's translated into English, does the translator write that my degree "equals a US Bachelor's," or do they leave it as the original title? I don't want to pay for a translation and then get told it's wrong or incomplete and have to redo the whole set.