Which of the Following Is True of Synchronous DRAM (SDRAM)

Multiple Choice

Which of the following is true of synchronous DRAM (SDRAM) chips?

A) They transfer data twice for each clock cycle, when compared to DRAM.
B) They are synchronized to the system clock.
C) They do not have to be re-energized as often as DRAM chips.
D) They use pipelining techniques.