I'm currently studying cybersecurity. However, I have come across this question about clusters. I do not fully understand how file systems view clusters. Any help in understanding this would be greatly appreciated. What my book tells me is that "Clusters are fixed-length blocks of data—one to 128 sectors" and that "Rarely do file sizes exactly match the size of these clusters perfectly. The extra space from the end of the file to the end of the cluster is called file slack. Cluster sizes vary in length, depending on the operating system and the size of the logical partition. Larger cluster sizes have more forensic value. With normal 512-byte sectors, if there is not enough data in the file to fill the last sector in the cluster, DOS or Windows makes up the difference by padding the remaining space with data from the memory buffers"
File systems view a cluster as entirely utilized under what circumstance?
a) If the sector has a size of 4096 bites
b) If even one bit is used
c) If ten sectors are used