Describe the timing diagram of a write operation.

• First the data is set on the data bus and the address is set, then the write pulse stores the data.
• First the address is set, then the data is set on the data bus, and finally the read pulse stores the data.
• First the write pulse stores the data, then the address is set, and finally the data is set on the data bus.
• First the data is set on the data bus, then the write pulse stores the data, and finally the address is set.