15 (1 point) Relative purchasing parity is defined as (1) domestic inflation minus foreign inflation = (E$/E,t - E$/E,t-1)/E$/E,t-1. 2) foreign inflation minus domestic inflation = (E$/E,t - E$/E,t-1)/E$/E,t-1. 3) domestic inflation minus foreign inflation = (E$/E,t + E$/E,t-1)/E$/E,t-1. 4) foreign inflation minus domestic inflation = (E$/E,t * E$/E,t-1)/E$/E,t-1