$C++11\text{'}$s unsigned long long int type $($which can be abbreviated as unsigned long long$)$ enables you to store values in at least which can hold numbers as large as $18,446,744,073,709,551,615.$

A$)16$ bytes $(128$ bits$)$

B$)4$ bytes $(32$ bits$)$

C$)8$ bytes $(64$ bits$)$

D$)2$ bytes $(16$ bits$)$