What is the current situation of the agricultural sector in Mexico?

The agricultural sector in Mexico represents only 4% of the country's economy.
Mexico has a high percentage of its workforce employed in the agricultural sector.
The most important agricultural products in Mexico are rice, beans, corn, wheat, sesame, and cotton.
a) Only I is correct.
b) Only II is correct.
c) Only III is correct.
d) I and II are correct.
e) II and III are correct.