I am doing my homework and am having trouble finding the answer to one question. We are supposed to view the code below:

Consider the following selection statement where X is an integer test score between 0 and 100.

input X

if (0 <= X and X < 49)

output "you fail"

else if (50 <= X and X < 70)

output "your grade is" X

output "you did OK"

else if (70 <= X and X < 85)

output "your grade is" X

output "you did well"

else if (85 <= X and X < 100)

output "your grade is" X

output "you did great"

endif

output "how did you do?"

Then we have to answer the following question:

How many levels of nesting are there in this design?

I have all the other answers to this assignment, but I do not know what they mean by nesting. Can someone please help?

Thanks!!!