Consider the following grammar assign ? id := expr id ? A | B | C expr ? expr + term | term term ? term * factor | factor factor ? id | - id

Now consider the sentence of the grammar: A := - A + B * C

1. Produce a rightmost derivation of this sentence. 2. For the grammar and sentence in Question 3, show the parse tree for the sentence. 3. For the grammar and sentence in Question 3, show the abstract syntax tree for the sentence.