Choose the Polynomial That Is Described $- 9 t ^ { 3 } - 3 n$

Multiple Choice

Choose the polynomial that is described.
-A monomial in one variable of degree 4

A) $- 9 t ^ { 3 } - 3 n$
B) $- 9 t ^ { 3 } - 4 t ^ { 2 } - 3 n - 8$
C) $4 n$
D) $- 9 t ^ { 4 }$