Which of the following properties are true for the trace of matrices?
tr(A+B)=tr(A)+tr(B)\text{tr}(A + B) = \text{tr}(A) + \text{tr}(B)tr(A+B)=tr(A)+tr(B)
tr(AB)=tr(BA)\text{tr}(AB) = \text{tr}(BA)tr(AB)=tr(BA)
tr(cA)=c⋅tr(A)\text{tr}(cA) = c \cdot \text{tr}(A)tr(cA)=c⋅tr(A)
tr(AT)=tr(A)\text{tr}(A^T) = \text{tr}(A)tr(AT)=tr(A)