Consider a processor with $86$ registers and an instruction set of size $13.$ Each instruction has five distinct fields, namely opcode, two source register identifiers, one destination register identifier, and a byte$-$long immediate value. Memory is byte$-$addressable. Which of the following options is correct?

Each instruction is of $4$ bytes.

A program of $1000$ instructions would take up $4125$B of memory space.

A program of $1000$ instructions would have $1000$B of immediate values.

Register identification fields require $18$ bits in the instruction.

Status: $[$object Object$]$

$1$ point