kill(all);

van=facebook.com/LearningCalculus$

T:1/(3-sqrt(8))-1/(sqrt(8)-sqrt(7))+1/(sqrt(7)-sqrt(6))-1/(sqrt(6)-sqrt(5))+1/(sqrt(5)-2);

fullratsimp(T);

A: is(T < 1);

B: is(T = 1);

C: is(1 < T) and (T < 2);

D: is(T > 2);