As I was driving along the freeway, a huge truck came hurtling up behind me. It seemed to take ages for the long body to get past as it overtook me. Afterwards, it gradually disappeared up the road in front of me. Which of the following principles would I have applied to help me realise that the truck remained the same size, although its image on my retinas changed?

A. shape constancy and size constancy

B. size constancy and orientation constancy

C. brightness constancy and orientation constancy

D. brightness constancy and size constancy