Tort Law classifies 3 categories: invitees, licensees and trespassers. Based on the differences among these 3 categories and the following scenarios, determine which of the following situations could lead to a civil lawsuit and why.

a) A courier delivers a parcel to your door.

b) A friend is invited to a dinner party at your home. He slips and falls, injuring his knee on your newly waxed floor.

c) A burglar breaks into your Bed &Breakfast. While crossing the living room, he trips over a rug. He falls and breaks his leg.

d) A job applicant enters your restaurant to hand in his resume. He pierces his hand on a nail sticking out of a counter.

e) A homeless breaks into your restaurant to have shelter for the night. He gets electrocuted by the electrified system you installed in the entrance.