Which expression is equivalent to (3.1x−2.4y+1.9)+(2.2x−1.4y−3.4)?

(3.1x+(−2.2x))+(−2.4y+(−1.4y))+(1.9+(−3.4))

(3.1x+2.2x)+(−2.4y+(−3.4y))+(1.9+(−1.4))

(3.1x+2.2x)+(−2.4y+(−1.4y))+(1.9+(−3.4))

(3.1x+2.2x)+(−2.4y+1.4y)+(1.9+3.4)