Statement I directly defines the symbols, giving 120÷12×6+2=62. Statement II: testing symbol assignments, only \=\div,*=\times,#=+produces \16\div 4\times 2+2=10$. So Statement II also uniquely determines the symbols. Either statement alone is sufficient.
Note: The chosen option 3 is incorrect; the correct answer is option 4 (either I or II is sufficient).