Which of the following contains a vague pronoun reference?
A. They are researching a hybrid South African tobacco plant that may decrease reliance on fossil fuels. It contains oily seeds that can be transformed into sustainable biofuel.
B. Scientists are researching a hybrid South African tobacco plant that may decrease reliance on fossil fuels. It contains oily seeds that can be transformed into sustainable biofuel.
Pick the correct answer from the listed options and provide the letter of the selected option.
Answer: A