Explanation:

Access time refers to the time it takes to retrieve data from memory. In general, access time is inversely proportional to the cost of memory. As access time decreases, the cost of memory increases.

Reason:

Access time is a critical factor in determining the performance of a computer system. Faster access time allows for quicker data retrieval, resulting in improved system performance. However, achieving faster access time often requires the use of more advanced and expensive memory technologies.

Impact of faster access time on memory cost:
- Increased complexity: Achieving faster access time typically involves the use of more advanced memory technologies, such as faster integrated circuits or higher clock speeds. These advancements often come with increased complexity in design and manufacturing, which can drive up the cost of memory.
- Reduced production volume: Memory technologies with faster access times are often newer and less widely adopted compared to slower memory technologies. This typically leads to lower production volumes and higher manufacturing costs, further increasing the cost of memory.
- Higher demand: Faster access time is desirable for many applications, especially those requiring real-time data processing or high-performance computing. The increased demand for memory with faster access time can drive up prices due to supply and demand dynamics.
- R&D investments: Developing memory technologies with faster access times requires significant research and development investments. These investments need to be recovered through higher prices for the resulting memory products.

Therefore, as access time is decreased and faster memory technologies are used, the cost of memory increases. This relationship is commonly observed in the market, where memory modules with faster access times are typically priced higher than their slower counterparts.