We have the following structure:
$\begin{bmatrix} A & B & C & D\\ A & C & B & D\\ B & A & C & C\\ A & A & B & C \end{bmatrix}$
It is required to tell which design is this CRD,LSD,RBD or factorial design?
I know it can't be LSD as it has same treatments in some row and column. But I am confused between CRD AND RBD.