In the following question, a sentence has been given in Active/Passive voice. Out of four alternatives suggested, select the one which best expresses the same sentence in Passive/Active voice. My father is going to build a six bedroom bungalow.

• A six bedroom bungalow was going to be built by my father.
• My father will have built a bungalow which will have six bedrooms.
• A bungalow of six bedrooms will have been built by my father.
• A six bedroom bungalow is going to be built by my father.