a) Yes
b) No - XLRs are used for balanced cables, RCAs for unbalanced cables which are also called single-ended
c) Single-ended means unbalanced and will be terminated with RCAs
d) Let's wait till someone that knows these products well can answer you. I suspect you can use either balanced or unbalanced between the ARCs, and either of spade, banana, pins or bare wire for termination of the speaker cable.
b) No - XLRs are used for balanced cables, RCAs for unbalanced cables which are also called single-ended
c) Single-ended means unbalanced and will be terminated with RCAs
d) Let's wait till someone that knows these products well can answer you. I suspect you can use either balanced or unbalanced between the ARCs, and either of spade, banana, pins or bare wire for termination of the speaker cable.