PDII Web TestEngine demo

A developer created the following test method:

@isTest(SeeAllData= true)

public static void testDeleteTrigger(){

Account testAccount = new Account(name = 'Test1');

insert testAccount;

List<Account> testAccounts = [SELECT Id, Name from Account WHERE Name like 'Test%'];

System.assert(testAccounts.size() > 0);

delete testAccounts;

testAccounts = [SELECT Id, Name from Account WHERE Name like 'Test%'];

System.assert(testAccounts.size() == 0);

}

The developer org has five accounts where the name starts with Test". The developer executes this test in the Developer Console.
After the test code runs, which statement is true?