Consider following statement
(A) Work done by pseudo force in non-inertial frame itself cannot be positive
(B) Net work done by static friction on the system (consisting surfaces I contact) is always zero
(C) Net work done by Kinetic friction on the system (consisting surfaces in contact) may be positive
(D) Work done by kinetic friction on a body may be positive
Select correct alternative :-

Options

A. A, B and C
B. B and D
C. A, B and D
D. A, B, C and D

Answer

A