Arranging the given numbers in ascending order:
11, 36, 40, 54, 68, 88, 90, 90
There are eight numbers in the set, and since it's an even number, we need to find the average of the two middle values: 54 and 68.
Median = (54 + 68) / 2 = 122 / 2 = 61
Therefore, the correct answer is that the median of the given set of numbers is 61.