JEE Main 2020 Chemistry question

Consider the following reactions: (i) Glucose + ROH Acetal acetyl derivative (ii) Glucose A acetyl derivative (iii) Glucose acetyl derivative 'x', 'y' and 'z' in these reactions are respectively :

• (A)5, 6, & 5
• (B)4, 5 & 6
• (C)5, 4 & 5
• (D)4, 6 & 5Correct