An extended ratio compares three or more numbers. In the extended ratio a:b:c, we have the ratio A:b, c and a:c

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Step-by-step explanation:

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An extended ratio compares three or more numbers.

In the extended ratio a:b:c

The ratio of the first two numbers is a:b (you can write a to b or a/b)

The ratio of the last two numbers is b:c (you can write b to c or b/c)

The ratio of the first and last numbers are a:c  (you can write a to c or a/c)

option: d is correct

step-by-step explanation: