The two-thread approximate agreement class for a given>0isdefined as follows: Threads A and Beach call decide (xa) and decide (xb) methods, where xa and xb are real numbers. These method calls...

The two-thread approximate agreement class for a given>0isdefined as follows: Threads A and Beach call decide (xa) and decide (xb) methods, where xa and xb are real numbers. These method calls respectively return values ya and yb such that ya and yb both lie in the closed interval[min(xa,xb),max (xa,xb)],and|ya−yb|≤. Note that this object is non-deterministic. What is the consensus number of the approximate agreement object?