Tree branches and the stems of many plants often contain large amounts of difficult-to-decompose lignin, so the efficiency of using them to extract biofuels is greatly reduced. Currently, a bacterium called Rhodococcus has been found that has the ability to decompose wood and other The ability of lignin in plants. Therefore, it is believed that Rhodococcus can be widely used in previously discarded stalks, thereby greatly improving the utilization of biofuels. Which of the following, if true, would best support the above conclusion? ['Rhodococcus can secrete an enzyme that has the ability to decompose lignin, but its secretory ability exhibits periodic changes.', 'Some fungi also have the ability to break down lignin. Studies have found that the growth of these fungi requires specific temperature and humidity.', 'Rhodococcus is easy to culture. Currently, Rhodococcus has been genetically sequenced, so Rhodococcus can be used to produce lignin-degrading enzymes on a large scale.', 'Lignin is a kind of oil-paper umbrella polymer material. So far, more than 95% of lignin is directly discharged into the river or burned after concentration, and rarely used effectively.']