Which of the Following Is a Common Example of Iron

Which of the following is a common example of iron contamination in the diet?

A) Using an iron skillet to scramble eggs can triple their iron content.
B) Cooking acidic foods in a copper pot can extract chelate iron from the pot.
C) Simmering acidic foods in glass dishes leads to leaching of iron salts from the glass.
D) Cooking leafy vegetables in a galvanized pot leads to a 6-fold increase in iron content.