Although spinach is rich in calcium, it also contains a large amount of oxalic acid, which can effectively prevent the body from absorbing calcium. Therefore, if a person wants to consume enough calcium, he must replace it with other calcium-rich foods. Spinach, at least with spinach. Which of the following, if true, would most weaken the argument for the topic? ['Rice does not contain calcium, but contains alkaline substances that neutralize oxalic acid and alter its properties.', 'The calcium content in dairy products is higher than that of spinach, and many people who regularly eat spinach also consume dairy products.', 'During cooking, the damaged oxalic acid in spinach is slightly more than calcium.', "In addition to spinach in people's daily diet, in fact, a lot of vegetables contain calcium."]