Plz urgent (Brainliest) Factor the expression.
m^2 - 3mn - 28n^2
A. (m+4n) (m-7n)
B. (m-4n) (m+70)
C. (m-2n)(m +14n)
D. (m+2n) (m-14n)

Acompany manufactures three types of cabinets. it makes 110 cabinets each week. in the first week, the sum of the number of type-1 cabinets and twice the number of type-2 cabinets produced was 10 more than the number of type-3 cabinets produced. the next week, the number of type-1 cabinets produced was three times more than in the first week, no type-2 cabinets were produced, and the number of type-3 cabinets produced was the same as in the previous week.