The term DIMM stands for the Dual In-Line Memory Module, which is a kind of memory, that is used in computers. It is a small board of flash memory that uses the 64-bit memory bus because the SIMM has only a 32-bit path. It enables DIMMs to simultaneously transfer more information, and the wrong choices can be defined as follows:
In choice A, It is used in sockets, that's why it is wrong.
In choice B, It is wrong because it is used in 32 bits only.
In choice D, It is wrong because it is used in the expansion of memory.
