Which of the following statement are true regarding RDA ?
RDA (Recommended dietary allowance) :
Amount of nutrient estimated to meet the nutrient requirement of 97% to 98% of healthy individual in an age and gender group.
RDA = EAR + 2SDEA
RDA is statistically defined as two standard deviation above the estimated average requirement (EAR)
RDA is statistically defined as equal to the EAR
RDA is statistically defined as equal to the adequate intake
RDA is defined as the recommended minimum requirement