Yaar they only gave me one reason for rejection that your marks are less ..but now on reapplying I will highlight my improvement maths certificate with 69 marks ... I think they took my 33 marks on first certificate and didn't check my maths improvement certificate.because minimum requirement is 50 but mine is 69..and my consultant told me that 90% chances are to get visa if we reapply again with some solid proof ..and highlighting your another certificate