According to statistics from the health department of a country, the obesity rate of children from poor families is nearly double that of children from rich families. According to data released by the government in December 2012, more than 24.3% of children from 11 years old in the country Of people have a problem of overweight, and the obese rate of children of the same age in rich families is only 13.7%. Therefore, experts believe that the poorer the family, the more likely it is that children will overweight. Which of the following, if true, would best support the above conclusion? ['Poor families generally choose to buy ingredients at cheap supermarkets.', 'Poor households often eat low-priced but high-calorie foods.', 'Children from poor families and children from rich families prefer different sports.', 'Children from poor families and children from rich families often attend different schools.']