The Vigilante [I got bored so its over]

Loot the keychain and wait until someone opens the closet up

You wait. There is a 25/25/25/25 chance that the police find you and take you away, the shooters find you and kill you, a student will find you, or that no one will find you at all....
I am not going to lie, I RNG'd my way out of this dilemma 

87 minutes have passed. 

Your older brother Jarret, who is a junior, opens up the closet.

Jarret: "This entire building is clear. Let's run out of this damn place while we still ca-"

An explosion is heard in the distance.

Jarret: "They must be bombing the place now. GO!"

Aaron: "Where are we going?"

Jarret: "JUST FOLLOW ME! Also where the hell did you get those guns from?"

Aaron: "I managed to stab a shooter and grab his guns."

Jarret: "Drop these, so the shooter doesn't suspect you..."

Inventory Item Removed: Remington 870 Shotgun [6(6) /0 12-Gauge Shells]
Inventory Item Removed: Silenced Glock 18 [18(18) /0 9mm rounds]
Inventory Item Removed: Frag Grenade
Inventory Item Removed: Machette

You follow Jarret, going straight then down a flight of stairs to the University commons. The dorm building is in the distance.

You can hear police sirens in the distance, coming from the way to the lobby.

A. Go to the lobby with the police.
B. Dodge the police and find an alternative exit.
C. Other