The minimum number of vectors of unequal magnitude required to produce a zero resultant is

The minimum number of vectors of unequal magnitude required to produce a zero resultant is?
a) 2
b) 3
c) 4
d) More than 4

Answer is 3.
Because three unequal vectors make triangle when we will do vector sum and then it become closed figure also the resultant of closed figure is always zero, so B option is correct