Use the following information to answer question 4. 4 3 2 1 -3 -2 -1 1 2 3 -1 4. In the diagram, f(x ) = x+3, when x # 1, and f (x) =1, when x =1. The value of lim f( x ) is A. 1 B. 2 C. 4 D. undefined 5. The limit of the sum -+n-x+x -+..., as the number of terms increases without bound, is A. - n B. 0 C. n D. undefined