It is difficult to grow cacti in a humid climate. It is difficult to raise orange trees in a cold climate. In most parts of a certain country, it is either easy to grow cacti or easy to raise orange trees. If the statements above are true, which one of the following must be false?
A: Most of the country is hot.
B: It is not possible to raise cacti in the country.
C: Half of the country is both humid and cold.
D: Most parts of the country are humid.
Choose A, B, C or D as your solution.
C