Verbal SC 105 求教！

105.      The physical structure of the human eye enables it to sense light of wavelengths up to 0.0005 millimeters; infrared radiation, however, is invisible because its wavelength-0.1 millimeters-is too long to be registered by the eye.

(A)           infrared radiation , however, is invisible because its wavelength-0.1 millimeters-is too long to be registered by the eye

(B)          however, the wavelength of infrared radiation-0.1 millimeters-is too long to be registered by the eye making it invisible

(C)           infrared radiation, however, is invisible because its wavelength-0.1 millimeters-is too long for the eye to register it

(D)          however, because the wavelength of infrared radiation is 0.1 millimeters, it is too long for the eye to register and thus invisible

(E)           however, infrared radiation has a wavelength of 0.1 millimeters that is too long for the eye to register, thus making it invisible

A 跟 C 我当时选了C，因为我觉得这题没有必要用被动语态，我觉得C的最后那个it指代没有问题啊，曼哈顿不是说一句话里同一个代词出现多次都是指代同一先行词吗？这里C中第一个its明显指代radiation，那第二个it应该就没有指代模糊的问题啊。