Framed example of switch statement includes a selector (variable c), constant expressions (such as 'a' or '3'), and statements (e.g. + +odd). We assume that selector, constant, and statement are objects already defined and we do not have to define them. You have to define the general syntax of switch statement (not the syntax of the particular example shown inside the frame; this example includes various optional components). Show the EBNF notation of the switch statement switch (c) {case 'a': case 'e' case 'i': case 'o': case 'u': ++vowel; break; case '0': case '2': case '4': case '6': case '8'; ++even; break; case '1': case '3': case '5': case '7': case '9'; ++odd; break; default: ++ other;}