Decide which title best describes all of the expressions

Has exactly two terms

Has a term with a coefficient of 6

Has exactly one term

Has greater than three terms

Has a term with a coefficient of 4

4+x+y+z
2n-6m+(m-9)

Has exactly two terms: 4+x+y+z

Has a term with a coefficient of 6: None of the expressions have a term with a coefficient of 6.

Has exactly one term: 2n-6m+(m-9)

Has greater than three terms: None of the expressions have greater than three terms.

Has a term with a coefficient of 4: 2n-6m+(m-9)