when usingthe full subtractor to subtract 0-1 and the input borrow is 1, the output is: O a: Difference =0 and borrow out =0 O b. Difference =1 and borrow out =1 O c. Difference =0 and borrow out =1 O d. Difference =1 and borrow out =0 U U. Generally, the main function of the first flip flop in the ripple counter is: O a. Does not change the output. o b. Toggle/ complement the current output. c. None of the mentioned choices. O d. Set the output to 1. e. Reset the output to 0. D latch with enable is: a. not a flip flop. b. a JK flip flop c. a T flip flop d. a D flip flop