I give TEE exam in June 2019 but my result show D grade in MRD101 (Theory) and C grade in assignment. My result show MRD101 is incomplete why?

Respected sir/mam ,
I am student of Master’s in Rural development. I give TEE exam in June 2019 but my result show D grade in MRD101 (Theory) and C grade in assignment. My result show MRD101 is incomplete why? But in grade system D grade show 50% to 59% it means pass but Sir/mam I again give the MRD101 exam and again D grade show in result and also incomplete what I do?? Plz reply sir /mam.