According to MPS Order 162, what are the age and prerequisite driving experience requirements to apply for an upgrade to a Class A2 (Heavy Tractor-Trailer / 重型半挂牵引车) driver's license?

1. Be at least 22 and under 63 years of age, and hold a Class B1 or B2 license for at least 2 years with no full 12-point deductions in recent cycles
2. Be at least 20 and under 50 years of age, and hold a Class C1 license for at least 1 year with no traffic violations
3. Be at least 24 and under 63 years of age, and hold a Class B2 license for at least 5 years regardless of point deductions
4. Be at least 21 and under 55 years of age, and hold any commercial driving qualification certificate for at least 6 months