Table:
text: United States Senate elections, 1992
Senate composition as a result of the elections
Senate composition as a result of the elections
D_41_ D_42_ D_43_ D_44_ D_45_ D_46_ D_47_ D_48_ D_49_ D_50_O
D 20 D 19 D 18 D 17 D 16 D 15 D 14 D 13 D 12 D 11
D 21 D 22 D 23 D 24 D 25 D 26 D 27 D 28 D 29 D 30
D 40 √ D 39 √ D 38 √ D 37 √ D 36 D 35 D 34 D 33 D 32 D 31
D 41 √ D 42 √ D 43 √ D 44 √ D 45 √ D 46 √ D 47 √ D 48 √ D 49 √ D 50 O

Question: What is the D48 if the D 50 O is d 31 in the 1992 US Senate election?