Question: Computer Science Principles of Programming Languages. Consider the following grammar: S :: = A B A :: = a A | a B :: =

Computer Science Principles of Programming Languages.
Consider the following grammar:
S::=AB
A::=aA|a
B::=b
and the following derivation:
S=>AB
=>aAB
=>aAb
=>aab
Which of the following are true?
This is a leftmost derivation
This is a rightmost derivation
This is not a valid derivation
This is a valid derivation, but it is not leftmost nor rightmost
Computer Science Principles of Programming Languages. Consider the following grammar: S::=AB

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