9. The arrays price_A and price_B given below contain the price in dollars of two stocks over 10 days. Use MATLAB to determine how many days the price of stock A was above the price of stock B. \[ \begin{array}{l} \text { price_A }=[19,18,22,21,25,19,1[7,21,27,29] \\ \text { price_B }=[22,17,20,19,24,18,16,25,28,27] \end{array} \]