Which statement about ocean water density is true? (Science)
 a) Ocean water that is lower in temperature and has a lower salinity has a higher density.
 b) Ocean water that is lower in temperature and has a higher salinity has a lower density.
 c) Ocean water that is lower in temperature and has a higher salinity has a higher density.
 d) Ocean water that is higher in temperature and has a higher salinity has a lower density.