Select the correct passive form of the given sentence.
When big tech companies owned your phones, they could make money on all sorts of services.

A

When your phones were owned by big tech companies, they could make money on all sorts of services.

B

When your phones are owned by big tech companies, they could make money on all sorts of services.

C

When your phone were being owned by big tech companies, they could make money on all sorts of services.

D

When your phones owned big tech companies, they could make money on all sorts of services.