Read the excerpt below and answer the question. hally: that's perfectly correct. you see, you mustn't get the wrong idea about me and my dad, sam. we also have our good times together. some bloody good laughs. he's got a marvelous sense of humor. want to know what our favorite joke is? he gives out a big groan, you see, and says: "it's not fair, is it, hally? " then i have to ask; "what, chum? " and then he says: "a nr's ar*e" . . and we both have a good laugh. (the men stare at him in disbelief.) what's the matter, willie? don't you catch the joke? you always were a bit slow on the uptake. it's what's called a pun. you see, fair means both light in color and to be just and decent. (he turns to sam.) i thought you would catch it, sam. why does hally tell this joke to sam and willie?
a to make sam and willie laugh
b to explain to willie what a pun is
c to hurt sam and willie with a racist joke
d to show the culture of white south africans