Consider the following statements about Indus Valley Civilization:
a. John Marshall was the first researcher to use the term, ‘Indus Valley Civilization’.
b. The port cities of this civilization are Sutkagendor, Balakot, Lothal, Allahdino, and Kuntasi.
c. Lothal is located at the head of the Gulf of Cambay.
Which of the following statements is correct?
1
Both a and b
2
Both b and c
3
Both a and c
4
All of the above