Eight students AJIT, BIKKI, DHARMA, FIZA, PREETI, RIDDHI, SIDDHI and GANI take a series of test. No two students get the same marks. AJIT always scores more than BIKKI. GANI always scores more than AJIT.RIDDHI always scores more than SIDDHI and PREETI but less than BIKKI. Each time either DHARMA scores the highest and FIZA scores the least or FIZA scores the highest and DHARMA scores the least.

Then which of the following can be true?