Greg says that the expression xyz has three terms because it uses three different variables. Determine whether Greg's reasoning is correct and explain why or why not.*

A. Greg is correct but his reasoning is incorrect. The three terms are x, y, and z because they are actually separated by multiplication, even though the multiplication symbol is
not shown.

B. Greg is not correct. The expression xyz has no terms because there are no plus or
minus signs.

C. Greg is correct. Every variable in an expression is a term. This means that x, y, and z
are the three terms of the expression xyz.

D. Greg is not correct. The expression xyz has one term, xyz. It is the only term because
there are no other parts separated by a plus or minus sign.