The disadvantage of dynamic RAM over static RAM is

A. higher power consumption

B. variable speed

C. need to refresh the capacitor charge every once in two milliseconds

D. higher bit density

E. None of the above

Answer: Option C

Solution(By Examveda Team)

The disadvantage of dynamic RAM over static RAM is needed to refresh the capacitor charge every once in two milliseconds.
The advantage of a DRAM is the simplicity of the cell - it only requires a single transistor compared to around six in a typical static RAM, SRAM memory cell.