Consider a processor $3$ distinct segments: code, data, and stack. Each of those segments has corresponding base and bounds registers. The values for the base and bounds registers are shown below.

Segment Segment Number Base Bounds $($length$)$

code $10$x$20000$x$1000$

data $20$x$40000$x$3000$

stack $30$xc$0000$x$2000$

On this $16-$bit machine, the top two bits of a virtual address determine the type of the segment:

Virtual address $=$