The balance of payments theory includes:

A$.)$The profit opportunity from arbitrage across international markets

B$.)$Current account and financial account re$-$balancing due to relative prices

C$.)$The re$-$equilibration of the fx market due to supply and demand of $FC$ and $DC$ across the currency pair

D$.)$Cross account $($FA to $CA$ and vice versa$)$ re$-$balancing due to arbitrage opportunities arising from changes in relative prices.

E$.)$An expectation that the BOP stays in balance $(=0)$