The answer is A. Peripheral
Answer:
Futures contracts are highly standardized whereas the terms of each forward contract can be privately negotiated. Futures are traded on an exchange whereas forwards are traded over the counter
Three samples that can be used to test for poisons are blood samples, hair samples, and gastric contents samples. ... An advantage of blood samples is that it's the most useful toxicological samples. The disadvantage of hair samples is that the results can be tainted by external •.. sources.