Which of the following is the correct logical order for the test cases?

The following Test Cases have been created for a simple web-based airline booking system.

Test Case 1: Search for an item: Available Flights.

Test Case 2: View selected item in My Flights.

Test Case 3: Login to the system: Login is accepted.

Test Case 4: Select an available flight: item added to My Flights.

Test Case 5: Print confirmation receipt, then exit.

Test Case 6: In My Flights, confirm details and book flight.

Which of the following is the correct logical order for the test cases?
A . 6, 3, 1, 4, 2, 5
B . 3, 4, 1, 2, 5, 6
C . 3, 2, 1, 4, 6, 5
D . 3, 1, 4, 2, 6, 5