The increasing order of stability of following free radicals is
1
\((CH_3)_2 \dot CH < (CH_3)_3 \dot C < (C_6H_5)_3 \dot C < (C_6 H_5)_2 \dot CH\)
2
\((CH_3)_2 \dot CH < (CH_3)_3 \dot C < (C_6H_5)_2 \dot CH < (C_6 H_5)_3 \dot C\)
3
\((C_6H_5)_3 \dot C < (C_6 H_5)_2 \dot CH < (CH_3)_3 \dot C < (CH_3)_2 \dot CH \)
4
More than one of the above
5
None of the above