Convert the following BNF rules to EBNF. Make the grammar as short as possible.

Convert the following BNF rules to EBNF. Make the grammar as short as possible. (Note: It is possible to replace all 7 BNF rules with a single EBNF rule) compound-statement { } | { statement. Sea labeled statement } statement seg> labeled statement identifier : statement | case constant-expression : statement I default : statement