[A] : Cartilage (Protein matrix) and Bone (Cal- cium matrix) are rigid connective tissue.
[R]: Blood is a connective tissue in which plasma is the matrix.
A. If both A and R are true and R is the correct explanation of A
B. If both A and R are true but R is not the correct explanation of A
C. If A is true and R is false
D. If both A and R are false