The correct relation among the mean (A), median (M), and mode (Mo) is as follows:

In a symmetric distribution, the mean, median, and mode are all equal.

In a positively skewed distribution (where the tail is on the right), the mode is the smallest value, the median is smaller than the mean, and the mean is the largest value.

In a negatively skewed distribution (where the tail is on the left), the mode is the largest value, the median is larger than the mean, and the mean is the smallest value.

So, in summary:

Mode ≤ Median ≤ Mean

Please note that this relation may not hold true in all cases, especially when dealing with complex or unusual distributions.