Let Sn = 1/13 + (1+2/13+23)+......+(1+2+....+n/13+23+.....+ n3); n = 1,2,3,.......Then, Sn is not greater than
(a) 1/2
(b) 1
(c) 2
(d) 4
Correct Option**(c) 2**
Explanation: