What is 1.4m + 3.7n +1 subtracted from 2.3m−1.2n ?
Responses

−0.9m+4.9n+1
negative 0.9 m plus 4.9 n plus 1

0.9m−2.5n−1
0.9 m minus 2.5 n minus 1

0.9m−4.9n−1