TO_OBTAIN_BETTER_MEMORY_UTILIZATION,_DYNAMIC_LOADING_IS_USED._WITH_DYNAMIC_LOADING,_A_ROUTINE_IS_NOT_LOADED_UNTIL_IT_IS_CALLED._FOR_IMPLEMENTING_DYNAMIC_LOADING,?$

• A. special support from hardware is required
• B. special support from operating system is essential
• C. special support from both hardware and operating system is essential
• D. user programs can implement dynamic loading without any special support from hardware or operating system