Has conversion or trespass to chattels been committed in any of the following cases? What is the evidence?

a. After an argument, Susan places all of her boyfriend's belonging on the sidewalk in front of Susan's home. The boyfriend watches Susan do this. He sues her for converting his belongings.

b. Same facts as in a, except that the boyfriend does not learn about the removal of the belongings until he comes home from work on the day Susan placed them on the sidewalk.

c. George orders a very expensive meal at a restaurant where he is dining alone. He puts his silk jacket on the chair next to where he is sitting and goes to make a phone call in the hall. While away, Ralph, another patron, comes over to George's table. He tries on George's jacket in order to help decide whether he wants to buy one like it. He also pours a few drops of wine from George's glass into an empty glass Ralph brings over. Ralph wants to taste the wine in order to decide whether to order the same wine. George sues Ralph for converting his jacket and his meal.

d. Mary lies to her boyfriend, John, about her use of birth control. When she becomes pregnant, he sues her for converting his semen.

Jurisdiction is North Carolina/United States

Class is Civil Injuries