Which of the following is false: 

(a) Every convergent positive series is convergent. 

(b) Every absolutely convergent series is convergent. 

(c) If the series $Σ S_n$ converges and $Σ |S_n|$ diverges, then $Σ S_n$ is conditionally convergent. 

(d) The series $1 − 2^{-2} + 3^{-2} − 4^{-2} + …$ is a divergent series.