(a) Compute Sally’s capital gains tax liability for the tax year 2007, giving relevant explanations for any transactions (if any) that you have treated as not giving rise to a capital gain in this year. (18 marks)

当一个因变量和自变量之间的关系呈曲线时，常用的拟合模型有（）。

A.一元多项式回归模型

B.-元线性回归模型

C.双曲线回归模型

D.对数曲线模型

E.修正指数曲线模型