Select the true statement:
a. when a new incident commander assumes command, the outgoing incident commander should be demobilized to avoid confusion
b. a lower ranking but more qualified person may not be designated as the incident commander
c. transfer of command procedures are implemented at the emergency operations center before the incident commander arrives at the scene
d. upon arriving at an incident the higher ranking person will either assume command, maintain command as is, or

Option D is the correct answer.

Explanation:

According to WordReference English Dictionary, the term commander is defined as a person in authority, a chief officer, a leader or as an officer in the U.S. Navy or Coast Guard ranking below a captain and above a lieutenant commander. In this case, the true statement says that Upon arriving at an incident the higher ranking person will either assume command, maintain command as is, or reassign command to a third party, which is the right answer.

b) the confederacy had to pay all union war expenses.

a is the final : )