Passage
Based on the above data, answer the given subquestions. Consider the following pseudocode.
```
M = [0]
MA = [[9], [9, 8], [9, 8, 7]]
MB = []
MC = []
foreach A in MA {
foreach B in A {
MB = [B] ++ MB
M = [last(MB) + B]
}
MC = [MB] ++ MC
MB = []
}
```