Identify the following statements as True (T) or False (F). (a) Traces of canals have been found at Harappan sites. (b) The first site to be discovered was Mohenjodaro. (c) Harappan cities had well planned drainage system. (d) Shortughai, the best source of Lapis Lazuli, was in Oman. (e) Metal scale-pans have been found at the sites.