Which answer matches this clue: the constitutional reform in 2001 that significantly increased the legislative powers of the regions?

• A Titolo V reform ✓
• B Riforma Bassanini
• C Riforma Renzi-Boschi
• D Legge Calderoli

The 2001 reform of Title V of the Constitution reversed the previous model, giving regions residual legislative power and the state only enumerated competences.