The correct option is A 4:3
Given ratio is 12:9
Write the ratio as a fraction by writing the antecedent of the ratio as the numerator, and the consequent of the ratio as the denominator.
12:9→129
Simplifying the fraction, we get
=3×43×3
Cancel out the common factors, we get
=43
=4:3
Hence, 12:9 is equivalent to 4:3.