Question regarding displacement current

1. The problem statement, all variables and given/known data
Displacement current arises due to
a)changing electric field
b)changing magnetic field

2. Relevant equations

3. The attempt at a solution
I think the answer should be c) because we already know that changing electric field is responsible for displacement current. But if the magnetic field is also time-dependent then it will induce an electric field according to Faraday’s law. So, the induced electric field will also contribute to the displacement current.
However, the correct answer is a).

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