Which of the following statements is not true?

Question

$(a)\;\text{In a screw gauge small value of pich gives more accuracy } \\(b)\;\text{The between linear motion of screw is called backlash error } \\(c)\;\text{Least count of screw gauge depends on the number of division on circular scale } \\(d)\;\text{length of a wire can not be measured using screw gauge }$