Answer True or False for each of the following statements. (a) The carburization surface was maintained at slightly less than 0.25 wt% carbon for each specimen. (b) Comparing the finished specimens at a depth of 0.20 mm, specimen A features the lowest carbon concentration. (c) Comparing the finished specimens as a whole, specimen D features the lowest overall amount of carbon. (d) Specimen B experienced a longer carburization time compared to specimen A. (e) The initial concentration of carbon in each part (prior to carburization) was approximately 1.00 wt% carbon.