Which of the Following Is NOT Related to the 98th

Which of the following is NOT related to the 98th meridian in the United States?

A) It corresponds closely to the 51 cm (20 in.) isohyet of mean annual precipitation
B) The area bordering this meridian was originally dominated by native grasses growing in a deep-sod cover.
C) Corn,wheat,and soybean production occur in this area.
D) Tall grass prairies occur to the east of it,and short grass prairies to the west.
E) The land is drier to the east of the meridian and wetter to the west.