The growth rate of small-headed sleeping sharks in the northern Arctic Ocean is very slow, even less than 1 cm per year, and their adult body length is extremely large, so its life span has become a very attractive topic. Researchers found that small-headed sleeping Sharks have few tissues that can be used to determine age, as do teleost fish, but others have used eyes when studying the age of whales, so researchers believe that the age of a small-headed sleeping shark can be determined by its eyes. Which of the following, if true, would best support this view? ['By studying the lens nucleus, someone has measured the actual age of a whale.', 'The lens nucleus at the most core position of the eye lens is present when the small-headed sleeping shark is a cub.', 'The lens of the eye is constantly growing, the lens of the growing small-headed sleeping shark is larger than that of the young.', 'The lens of the small head sleeping shark has crystalline protein, which is not metabolically active, and can even be regarded as "dead" tissue.']