Let [x] denote the greatest integer that is less than or equal to x, e.g. [3.45] = 3, then [1/3] + [2/3] + [22/3] + [23/3] +...+ (101 terms) equals

1) 1/3( 4⁵⁰ - 1) - 50
2) 1/3( 4⁵¹ - 1) - 51
3) 2/3(4⁵⁰ - 1) - 50
4) None of these