Consider the following statements:
The 8259A Programmable Interrupt Controller can
1. manage eight interrupts
2. vector an interrupt request anywhere in the memory map
3. have 8-bit or 16-bit interval between interrupt vector locations
4. be initialized with operational command words
Which of the above statements are correct?

A. 1, 2 and 3 only

B. 1, 2 and 4 only

C. 3 and 4 only

D. 1, 2, 3 and 4

Answer: Option B