(2 points) A magnetic fickd, B, is given as a function of the distance, r, from the center of the wire as follows: B=r0rB0 when rr0, and B=rr0B0 when r>r0. Here r0 and B0 are positive constants Sketch a graph of B against r, and use it to answer the following questions. As you do so, think about what the meaning of the constant B0 is. A. Is B a continuous function of r ? (Enter yes or no. Be sure that you can explain your answer) B. Is B a differentiable function of r ? (Enter yos or no Be sure that you can explain your answer.) Note: You can eam partial credit on this