Suppose a computer OS uses combined scheme and each disk block is $64B$ assume that an index block contains $16$ direct block numbers $($disk addresses$)$ and the block numbers for one indirect block one double indirect block and one triple indirect block assume also that a block number in $4$ bytes what is the largest possible file on that computer:

A$)64MB$

B$)32GB$

C$)274KB$

D$)18TB$

DE$)$ None