The vector q=[q1,q2………q8]^T of a four noded quadrilateral denotes ____

(a) Load vector

(b) Transition matrix

(c) Element displacement vector

(d) Constant matrix

I had been asked this question by my college professor while I was bunking the class.

My question comes from Two Dimensional Isoparametric Elements topic in chapter Two Dimensional Isoparametric Elements and Numerical Integration of Finite Element Method