A、Because she does more housework while the parents are out. B、Because she purchases groceries for evening meals. C、Because she

W: Hi, Mr. Adams?
M: Ah, Yea. You must be Kelly. Thanks for coming.
W: Here’s my card.
M: Oh, the entrepreneurial spirit. It is hard to find a good babysitter on a Friday night.
W: Well, I like watching kids, and I need the extra money,
M: Well, I beard you were one of the best and most affordable babysitters in the area, and…
W: Uh, well, I’d like to talk to you about my new rate increases.
M: Rate increases?
W: You see, Mr. Adams. I’ve consulted with my financial advisor, Uh, my mother, and she says I should charge more per child since I do cook and clean your house while you’re away.
M: Oh, I see. So, what do you have in mind?
W: Well, as I see it, I’d like to ask a dollar more per child per hour, and overtime after midnight. Based on my calculations, that’s only 10.23% above the going market, and I’m now a certified babysitter with training in CPR.
M: Oh, I never knew there were courses and certifications in babysitting.
W: Time are changing, Mr. Adams. I have to figure in expenses for a benefits package to cover college tuition, retirement, and my stock portfolio. Well, I tell my dad what to do.
M: Ah now, you’re pulling my leg. I mean, how old are you anyway?
W: Old enough to be a tough negotiator.