Using the grammar notation in your textbook, the expression ::= 0 | 1 | 2 means: A) "digit must be equal to 012" B) "digit can be replaced with 1 or 2" C) "digit must start with 0 then 1 then 2" D) "digit can be replaced with 0 or 1 or 2"

Question

Using the grammar notation in your textbook, the expression <digit> ::= 0 | 1 | 2 means:
A) "digit must be equal to 012"
B) "digit can be replaced with 1 or 2"
C) "digit must start with 0 then 1 then 2"
D) "digit can be replaced with 0 or 1 or 2"

Quizplus · Accepted Answer

The notation " ::= 0 | 1 | 2" means that the non-terminal "" can be replaced by any of the terminal symbols "0", "1", or "2".

Using the Grammar Notation in Your Textbook, the Expression ≪digit>