Which of the following rules terminate the Alpha$-$beta pruning search?

Question $2$Answer

a$.$

Search can be stopped below any MIN note having a beta value less than or equal to the alpha value of any of its MAX node ancestors.

b$.$

Search can be stopped below any MAX note having an alpha value greater than or equal to the beta value of any of its MIN node ancestors.

c$.$

Both a and b$.$

d$.$

None of the above.