The difference between DRAM’s and SDRAM’s is/are ________

• A. The DRAM‚Äö√Ñ√∂‚àö√ë‚àö¬•s will not use the master slave relationship in data transfer
• B. The SDRAM‚Äö√Ñ√∂‚àö√ë‚àö¬•s make use of clock
• C. The SDRAM‚Äö√Ñ√∂‚àö√ë‚àö¬•s are more power efficient
• D. None of the mentioned