In the mechanism of the following transformation of the cyclic ether to the corresponding dibromide, there are ________ distinct transition states and ________ distinct intermediates. (Hint: Write out the full arrow-pushing mechanism for this transformation.)

a) 1 transition state, 1 intermediate
b) 1 transition state, 2 intermediates
c) 2 transition states, 1 intermediate
d) 2 transition states, 2 intermediates