Final answer:
The major issue Charles would face if he relied on hashing malware packages to identify malware packages is that hashing can be spoofed, collisions can result in false positives, and it cannot identify unknown malware.
The Correct Option is; B. Collisions can result in false positives.
Step-by-step explanation:
If Charles relied on hashing malware packages to identify malware packages, the major issue he would face is that hashing can be spoofed. This means that attackers could modify the contents of a malware package without changing its hash value, allowing malicious software to go undetected.
Another issue is that collisions can result in false positives. In hashing, different inputs can produce the same hash value, which may lead to identifying non-malicious packages as malware. Lastly, hashing cannot identify unknown malware. Hashing is based on comparing known hash values, so it cannot detect new or unknown malware.