23. A gold crown recently acquired is suspected to be brass covered in gold. The crown weighs 25.0 N in air and has an apparent weight of 22.5 N in fresh water. Based on these results, which of the following conclusions is correct? (pgold = 19,300 kg m3 , pbrass = 8300 - 8700 kg m3 ) a. It is likely that the crown is made of gold only. b. It is likely that the crown is made of half brass and half gold. c. ltis likely that the crown is made of brass covered in gold. d. It is likely that the crown is made of brass only