Let the nodes representing four dates leaving Albuquerque be nodes 1, 2, 3, and 4, and the nodes representing four dates leaving San Diego be nodes 5, 6, 7, and 8. Two types of round-trip tickets can be purchased. The ticket uses Albuquerque as the origin and San Diego as the destination and vise versa.

In the Network, let's use the solid arc (i,j) to represent the purchase of the round-trip ticket using Albuquerque as the origin and San Diego as the destination and leaving Albuquerque on date i and return from San Diego on date j. Similarly, let's use the dashed arc (i,j) to represent the purchase of the round-trip ticket using San Diego as the origin and Albuquerque as the destination, and leaving San Diego on date j and return from Albuquerque on date i.

i=1, 2, 3, 4 and j=5, 6, 7, 8

Which of the following statement is not true?

A.

Solid arc (1,5) represents the purchase of the round trip ticket leaving Albuquerque on Monday, March 2, and return from San Diego on Friday, March 6.

B.

Dashed Arc (1, 5) should not exist in the network.

C.

Dashed arc (2, 5) represents the purchase of the round-trip ticket leaving San Diego on Friday, March 6, and return from Albuquerque on Monday, March 9.

D.

Solid arc (4,7) exists in the network.

Q7 to Q10 are based on this problem. Jack lives in Albuquerque and must spend the majority of March on-site with a client in San Diego. His travel schedule for the month is as follows: The usual round-trip ticket price between Albuquerque and San Diego is $750. However, the airline offers a 25% discount if the dates on a roundtrip ticket cover less than seven nights and include a weekend. A 35\% discount is offered for round-trip tickets covering ten or more nights, and a 45% discount is available for round-trip tickets covering 20 or more nights