Which of the following statements is true about language training in the context of selection criteria for international assignments?

A$.$

Traditionally, managers from English$-$speaking countries have done very well in the language area.

B$.$

According to research, expatriates are most likely to learn the local language if the host country is a developing nation.

C$.$

Being able to speak with locals in their own language is a major milestone for many expatriates in finally feeling connected to the foreign country.

D$.$

Language training is less important in countries like Russia, where successful integration is independent of the ability of an expatriate to converse in Russian.