Tabitha needs to rewrite this sentence so it is direct, avoids wordiness, and yet contains all necessary information: $"$In order to obtain all of the results in a timely fashion, it is critical for any and all participants to direct their communication to the coordinator on$,$ or at least no later than, July $21$ so that an official count can be determined." What rewrite should Tabitha choose?

A$.$ To determine an official count, it is critical for all participants to contact the coordinator by July $21.$

B$.$ In order to obtain all the results in a timely fashion, it is critical to contact the coordinator on$,$ or no later than, July $21.$

C$.$ The coordinator needs an official count in a timely fashion.

D$.$ Everyone should contact the coordinator as soon as possible.