You are correct, the answer A) Nylon stoppers should be used with nylon line is the correct answer. Nylon line is susceptible to chafing and abrasion, so using nylon stoppers helps protect the line from wear and tear. Nylon stoppers are a better choice than metal stoppers, which can cut or damage the nylon line. The other answer choices are incorrect: B) Nylon line is not ideal for alongside towing due to its tendency to stretch and recoil. C) Nylon line typically only stretches 10-20%, not 50% as stated. D) Nylon line generally lasts longer than manila line, which is more prone to deterioration.