A parent tells you that they are worried that their child isn't gaining enough weight. According to their growth chart from a year ago, they fell at around the 15th percentile for the age and weight. And at this checkup, they fell at approximately the 13th percentile for age and weight. Your best response would be: They do not appear to be gaining an appropriate amount of weight, as they should have been at the 20th percentile by now They do not appear to be gaining an appropriate amount of weight, as they are still below the 50th percentile They appear to be gaining an appropriate amount of weight because they are still above the 5th percentile They appear to be gaining an appropriate amount of weight as they are still at approximately the same percentile