Genetically modified “golden rice” has been engineered to meet human nutritional requirements. Which one of the following statements best qualifies golden rice?

(a) Its grains contain pro-vitamin A which upon ingestion is converted to vitamin A in the human body

(b) The grains have been fortified with genes to provide three times higher grain yield per acre than other high yielding varieties

(c) Its modified genes cause the synthesis of all the nine essential amino acids

(d) Its modified genes cause the fortification of its grains with vitamin D