The correct option is A Bolan Pass
Mehrgarh is a Neolithic site located near the Bolan Pass on the Kacchi Plain of Balochistan, Pakistan. Early evidence has been found suggesting that a Civilization existed in Mehrgarh as early as 7000 BCE which is 3500 years before the Indus Civilization. Archaeological digs have unearthed some of the earliest evidence of farming and husbandry in that region.