$1.$ Which of the following statements best describes why the generate$-$test heuristic isconsidered to be a heuristic rather than an algorithm?a$)$ Because it is not guaranteed to produce a correct solutionb$)$ Because it can be very inefficient when the search space of possible solutions islargec$)$ Because it involves repeatedly generating a possible solution and testing to seewhether the solution is correctd$)$ Because it may be the only available strategy if there is no way of measuring howclose the current state is to the goal state