I think ANSWER is PART (C)
Both statements together are sufficient, but neither statement alone is sufficient.
Because based on height and width we can calculate effectively how much distance will be traveled in one step.
Each step in general form a right angle triangle in which base is 1 and height is 3/4 so in each step effectively we will travel $\sqrt[2]{1^{2}+(3/4)^{2}}$
Please correct me if i am wrong.