Full Detailed In-Depth Explanation:

Autonomous Transaction Processing (ATP) supports specific service names for connectivity:

TPURGENT:High-priority service with 200 concurrent statements per OCPU and parallelism.

MEDIUM:Balanced service for moderate workloads.

HIGH:Optimized for reporting/batch jobs with high parallelism.

LOW:Low-priority service for minimal resource use.

TP:General-purpose transactional service.

TPPERFORMANTis not a recognized service name in ATP documentation, making A the correct answer.