5 i(d) [5 Marks] Grammars Given the following EBNF expressions, identify the one that best defines a grammar for accepting four-digit binary numbers (e.g. 1010, 1111, 0001, 1000, etc). If uncertain, use the 'clear button to clear your answer. binary = digit, digit, digit, digit digit = [ '0' I '1' ] binary = [ digit ] digit = { 10' , 11' } binary = digit, digit, digit, digit digit = '0' I '1' binary = [ digit ] digit = [ '0' I '1' ] @ Clear