What does cachesize 1000000 represent in the slapd.conf file?

What does cachesize 1000000 represent in the slapd.conf file?

A.
The number of entries to be cached.

B.
The size of the cache in Bytes.

C.
The size of the cache in bits.

D.
The minimum cache size in Bytes.

E.
The maximum cache size in Bytes.