In rhombus L M P Q, diagonal P L and Q M intersect at R. m \angle Q L M = 2 x^ { 2 } - 10, m \angle Q P M = 8 x, and M P = 10. Find the perimeter of L M P Q.
Choices:
A:10
B:40
C:70
D:140
Please directly answer the question and provide the correct option letter, e.g., A, B, C, D.
Question: In rhombus L M P Q, diagonal P L and Q M intersect at R. m \angle Q L M = 2 x^ { 2 } - 10, m \angle Q P M = 8 x, and M P = 10. Find the perimeter of L M P Q.
Choices:
A:10
B:40
C:70
D:140
Please first conduct reasoning, and then answer the question and provide the correct option letter, e.g., A, B, C, D, at the end.
Question: In rhombus L M P Q, diagonal P L and Q M intersect at R. m \angle Q L M = 2 x^ { 2 } - 10, m \angle Q P M = 8 x, and M P = 10. Find the perimeter of L M P Q.
Choices:
A:10
B:40
C:70
D:140