The state-space model for a certain application has been given to us with the following state description matrices: 0.174 0 0.157 0.645 1 000 0 000 000 000 100 01 0 0 C=[ 1 0 0 0 0]. B= -0.207 -0.005 0 0 0 (a) Draw a block diagram of the realization with an integrator for each state-variable. (b) A student has computed der C = 2.3 x 10-7 and claims that the system is uncontrollable. Is the student right or wrong? Why? (c) Is the realization observable?