In the context of global trade and economic development, which scenario best illustrates the concept of \"Dutch Disease\"?

a A country discovers significant oil reserves, leading to a booming oil export sector, but this inadvertently causes a decline in its manufacturing and agricultural sectors due to currency appreciation and resource reallocation.

b A nation experiences rapid technological advancement in its telecommunications sector, overshadowing and diminishing its traditional manufacturing industries.

c Following a major economic reform, a country sees a massive influx of foreign direct investment in various sectors boosting overall economic growth.

d A government imposes high tariffs on imported goods to protect its nascent technology sector, leading to retaliation from trading partners.