Identify whether the series summation of 16 open parentheses 5 close parentheses to the i minus 1 power from 1 to infinity is a convergent or divergent geometric series and find the sum, if possible. a) this is a convergent geometric series. the sum cannot be found. b) this is a divergent geometric series. the sum cannot be found. c) this is a convergent geometric series. the sum is –4. d) this is a divergent geometric series. the sum is –4.