Which company brought out the very first RAM stick for commercial use?

Which company brought out the very first RAM stick for commercial use?

• Intel
• Dell
• MSI
• IBM 

EXPLANATION

IBM

Commercial use of SRAM began in 1965, when IBM introduced the SP95 memory chip for the System/360 Model 95.

Random-access memory (RAM /ræm/) is a form of computer memory that can be read and changed in any order, typically used to store working data and machine code.^[1][2] A random-access memory device allows data items to be read or written in almost the same amount of time irrespective of the physical location of data inside the memory. In contrast, with other direct-access data storage media such as hard disks, CD-RWs, DVD-RWs and the older magnetic tapes and drum memory, the time required to read and write data items varies significantly depending on their physical locations on the recording medium, due to mechanical limitations such as media rotation speeds and arm movement.