#BTCBreaks80K
You place a market buy for 0.3 BTC at once. Which is true?

AAll 0.3 BTC fills at 100,000 — no slippage at allBYou only get the 0.1 BTC at the cheapest batch; the rest won't sellCThe three batches differ in price, so your average fill is above 100,000DThe order is rejected because the batch prices aren't uniform