Which of the following is a major foreign exchange earner in Sri Lanka?

مندرجہ ذیل میں سے کون سری لنکا میں غیر ملکی کرنسی کمانے والا بڑا ملک ہے؟

Rice

Tea

Wheat

Cotton

None of these

Tea is the major foreign exchange earner crop for Sri Lanka garnering approximately 1.5 billion dollars through export.