Directions: In the question given below, a passage is given followed by three statements that may or may not be inferred from the passage. Select the correct statements that can be inferred. 

A study using Office of National Statistics data has ranked 20 of the most popular courses according to the level of salary graduates are likely to be on five years after leaving university. Unsurprisingly, medicine and dentistry are at the top of the list when it comes to earning potential with graduates earning some £47,300 per annum. But some unexpected entries lower down on the list include law - which could see graduates taking home a relatively modest £25,200, only marginally more than those who have teaching degrees. The current average UK salary is £27,600 per year. 

I. Students opting for medicine and dentistry can be expected to earn more than the current average salary.

II. The average salary of teachers in UK is less than the current average salary in UK.

III. Only doctors and dentists earn more than the current average salary in UK.