The Series follows pattern
102
102 -1 =101
101 -3 =98
98 -5 =93
93 -7 =86
Since 1,3,5 and 7 are subtracted in order to get the next term
So 7 +2 =9
should be subtracted in order to get next term
So
next term should be
86 -9 =77
77 -11 =66
66-13 =53
So option C is correct
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