What is the right course of action here?

You selected the correct answers. The intersection is controlled by a yield sign on your side, meaning you must give way to traffic from the right and to oncoming traffic that does not have to yield. The yellow car is coming from your left, but you must yield to the motorbike, which is coming from your right and has no yield sign. The motorbike may go first, then you may go before the yellow car, since you have priority over left-turners after yielding to the right. Knowing the "right before left" and understanding the yield sign helped you choose the correct options.