ATC have no right to ask why the diversion, if you have already said 'commercial reasons'. They get far too nosey about things that arent their business. The airlines are their customer - NOT the other way around!
Wooooa there! You are way out of synch
outofsynch ! Wind your anti-ATC neck in for a minute and reflect a little about the times we live in. We have responsibilities towards our
customers' safety beyond just ensuring seperation.