CONSIDER_A_MEMORY_ORGANISED_INTO_8K_ROWS,_AND_THAT_IT_TAKES_4_CYCLES_TO_COMPLETE_A_READ_OPERATION._THEN_THE_REFRESH_OVERHEAD_OF_THE_CHIP_IS_______?$

• A. 0.0021
• B. 0.0038
• C. 0.0064
• D. 0.0128