Assume X (terminal or non-terminal) is the top symbol in the stack, and c is the next symbol in the input in LL(1) parsing, which of the following indicates a syntax error?
i. x is any terminal other than c
ii. x is a non-terminal, but the cell M[X,c] in the parsing table is empty
iii. x is any non-terminal other than c
iv. x is a non-terminal, but the cell M[X,c] in the parsing table is not empty
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