The woman is holding a mug , and has sunglasses on the top of her head .
It is impossible that she is wondering where her sunglasses are , forgetting that they are on top of her head .
It is impossible that she is wondering where her sunglasses are , forgetting that they are on top of her head .
There is a very good chance that she is wondering where her sunglasses are , forgetting that they are on top of her head .
She is wondering where her sunglasses are , forgetting that they are on top of her head .