Does anyone can help me with question (d)?

3. Consider the following EBNF grammar (extracted from the Pascal-ISo-7185 grammar) for VA (VarAccess) VA - CV | Id CV -IV FD AV -> VA RV - VA This grammar is indirectly left recursive. a) Show how this grammar may be transformed into one involving a single rule of the form. VA -Id Selector b) Give the rule for Selector using EBNF c) Describe VA using a single syntax graph. d) Write a recursive descent parser (in pseudocode or C) for VA. Assume the existence of procedures NextSym and Match. 3. Consider the following EBNF grammar (extracted from the Pascal-ISo-7185 grammar) for VA (VarAccess) VA - CV | Id CV -IV FD AV -> VA RV - VA This grammar is indirectly left recursive. a) Show how this grammar may be transformed into one involving a single rule of the form. VA -Id Selector b) Give the rule for Selector using EBNF c) Describe VA using a single syntax graph. d) Write a recursive descent parser (in pseudocode or C) for VA. Assume the existence of procedures NextSym and Match