In agamous mutant (flower within flower phenotype) which of the following statements is valid:

1
Class A genes are expressed in the first two whorls, Class B genes are expressed in the second and third whorls and Class C genes are expressed in the third and fourth whorls. 
2
Class A genes are not expressed. Class B and C genes are expressed in all the whorls.
3
Class A genes are not expressed. Class B genes are expressed in the second and the third whorls and Class C genes are expressed in all the whorls.
4
Class A genes are expressed in all the whorls. Class B genes are expressed in the second and the third whorls. 

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