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SAT® Subject Test in Math 1 & 2

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Dimensions when Multiplying

SATSTM-FX9X4P

If matrix $\text{A}$ has dimensions $4\times2$, matrix $\text{B}$ has dimensions $2\times3$, and $\text{AB}=\text{C}$, then matrix $\text{C}$ must have what dimensions?

A

$2\times2$

B

$2\times3$

C

$2\times4$

D

$3\times4$

E

$4\times3$