Consider the following grammar for a declaration list:

a. show a leftmost derivation of the string under this grammar.

b. Rewrite the grammar so that arguments are separated by commas (similar to the function arguments in C). For instance, each of the following should be a valid string under the new grammar:

decl list decl : decl list l decl specifier type name list specifier const static type double int name list name | name, name list name id args args ( decl-list ) |