Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A): Between 1845 and 1851, the Irish potato crop was destroyed with the outbreak of potato blight leading to severe famine.
Reason (R): Itinerant lecturers were appointed to travel to rural areas of Ireland and teach small farmers how to grow nutritious root crops other than potato.
In light of the above statements, choose the most appropriate answer from the options given below.