Figure 12-1 -Refer to Figure 12-1. a Type II Cepheid Has Been

Figure 12-1

-Refer to Figure 12-1. A Type II Cepheid has been located in a distant globular cluster with a period of 10 days. What is the star's absolute magnitude

A) −1
B) 0
C) −4
D) −6
E) The absolute magnitude of a Cepheid variable cannot be determined unless its distance is known.