Under Argentine National Traffic Law 24.449, what is the minimum age and prerequisite experience required to obtain a professional driver's license (Classes C, D, or E)?

1. Minimum 18 years of age with 6 months of holding a Class A license
2. Minimum 21 years of age and at least 1 year of prior experience holding a valid Class B (private car) license
3. Minimum 25 years of age with no prior licensing required
4. Minimum 20 years of age with an engineering diploma