Please assist with the questions in the images below:

A general must determine whether or not to attack a certain front. He is unsure of the enemy strength at the front. He could recon the front to estimate the enemy strength, this would help him decide if it was too strong to attack but the recon may tip off the enemy of his plan to attack and could increase his casualties. The success of his mission depends on the losses (casualties) he incurs from the attack. His decision problem is displayed in the inuence diagram below. Use the inuence diagram to answer the following two questions: a. Which arc should be dropped? Why? b. Which arc should be added (i.e. which two nodes should be connected)? Why? \f