The location-based game for smartphones "Pokemon Go" ____ by Niantic and became popular all over the world a)developed

The location-based game for smartphones \"Pokemon Go\" ____ by Niantic and became popular all over the world.

a)developed; b)was developed; c)had developed; d)was developing.

Основываясь на местоположении игра для смартфонов \"Pokemon Go\" была разработана Niantic и стала популярной во всем мире.

The location-based game for smartphones \"Pokemon Go\" was developed by Niantic and became popular all over the world.