Science:Math Exam Resources/Courses/MATH221/December 2019/Question 07 (a)/Statement

Suppose $A$ is an $n\times m$ matrix where $n>m$. Indicate the correct way to complete the sentence.

The set of vectors ${\bf {b}}$ in $\mathbb {R} ^{n}$ such that $A{\bf {x}}={\bf {b}}$ has at least one solution is...

A: the null space of $A$.

B: $\mathbb {R} ^{m}$.

C: the column space of $A$.

D: $\mathbb {R} ^{n}$.