If C is related to 2015 and F is related to 2019 in a certain way, then G is related to which of the following year?

Study the following information carefully and answer the questions given below. Eight persons A, B, C, D, E, F, G and H completed Army training in eight different years viz. 2012 to 2019, but not necessarily in the same order. D completed the training three years after F. Only three persons completed the training between C and F. C doesn’t complete on an odd numbered year. The number of persons completed before D is one more than the number of persons completed after
B. Only one person completed the training between B and
A. The difference between the years in which G and E completed is three years. Both H and E completed the training in consecutive years.