## Questions 88-90
In the circuit above, the resistors all have the same resistance. The battery, wires, and ammeter have negligible resistance. A closed switch also has negligible resistance.
89. Closing which of the switches will produce the greatest reading on the ammeter?
(A) S1 only
(B) S2 only
(C) S1 and S2
(D) S1 and S3