Which of the following is$/$are correct?

Question $15$Select one or more:

a$.$

In Google's Bigtable, the row range for a $($big$)$ table is dynamically partitioned according to the lexicographic order of row keys.

b$.$

Dynamo uses consistent hashing to achieve incremental scalability.

c$.$

Google's Bigtable cannot be used with MapReduce for running large$-$scale parallel computations.

d$.$

Google's Bigtable cannot manage versioned data.