Final answer:
b. Clock hours of server time and d. Additional storage
The criteria affecting billing for RDS are data transfer in, clock hours of server time, and additional storage.
Step-by-step explanation:
The criteria affecting billing for RDS include data transfer in, clock hours of server time, and additional storage.
Data transfer in refers to the amount of data transferred into the database instance, which can affect the cost.
Clock hours of server time refers to the duration for which the server is running, and the billing is based on this usage.
Additional storage refers to the extra storage space used beyond the allocated amount, which incurs additional charges.