Optimality of BFS is
A. When there is less number of nodes
B. When all step costs are equal
C. When all step costs are unequal
D. Both a & c
Answer:A
Optimality of BFS is
A. When there is less number of nodes B. When all step costs are equal C. When all step costs are unequal D. Both a & c
Explanation: It always expands the shallowest unexpanded node. 2. How many successors are generated in backtracking search?