Read the paragraph: (1) Jamie collected stones for a wall he wanted to build carefully he put each one into place. (2) He wanted the wall to look as if it had been there for many years without any changes. (3) He had carefully selected stones to make the new wall look just as old as the other nearby walls did. (4) Jamie stood back and admired the work that he had already accomplished.
Which sentences is a run-on and should be written as two sentences?
A. Sentence 1
B. Sentence 2
C. Sentence 3
D. Sentence 4