Answer: the correct option is A.
Step-by-step explanation:
Weight = Mass X Acceleration due to gravity(10m/s2)
If A has a mass of 4Kg and the mass of B is twice that of A. Then their weight will be :
For A:
W = 4 x 10 = 40N
For B:
Mas of B is two times that of A i.e
2 x 4 = 8kg
W = 8 x 10 = 80N
Comparing the weight of A and B it is clear that the weight of B is also twice the weight of A