The SES gradient is a phenomenon in public health that refers to the findings that A) the higher a person's socioeconomic status is, the less happy and psychologically healthy a person is. B) the higher a person's socioeconomic status is, the higher is that person's risk of getting sick and dying prematurely. C) the higher a person's socioeconomic status is, the more happy a person is. D) the higher a person's socioeconomic status is, the lower is that person's risk of getting sick and of dying prematurely. E) socioeconomic status is only related to health among individuals of low income.