Final answer:
The storage capacity of a DVD-18 DVD-ROM is 17.08 GB, closest to 18 GB (option c), which makes it the most accurate choice among the provided options.
Step-by-step explanation:
The storage capacity of a DVD-18 DVD-ROM is 17.08 GB on a double-sided, double-layer disc, each side containing 8.54 GB. This is known as a double-sided dual-layer format, and it allows for a significant amount of data storage on the DVD. Among the options provided:
- 4.7 GB is the capacity of a single-sided single-layer DVD (commonly referred to as DVD-5).
- 9.4 GB is the capacity of a double-sided single-layer DVD (DVD-10).
- 18 GB is not a standard storage capacity for DVDs and is actually slightly higher than the true capacity of a DVD-18, which is close to this value.
- 36 GB is not a standard DVD format and is too high for any DVD storage capacity.
Thus, the correct answer is closest to option c) 18 GB, acknowledging that the actual capacity is 17.08 GB, which is rounded up for simplicity in some contexts.