For aluminum（Z2 = 13） and gold（Z2 = 79 ）targets， what is the ratio of α particle scattering at any angle for equal numbers of scattering nuclei per unit area？（）

For aluminum（Z2 = 13） and gold（Z2 = 79 ）targets， what is the ratio of α particle scattering at any angle for equal numbers of scattering nuclei per unit area？（）
A.134.5
B.0.03
C.36.93
D.1.47
正确答案：36.93