The Wallace and Ladmo Show, also known as It's Wallace? and Wallace & Company, was a children's television show produced by and aired on KPHO-TV (Channel 5) in Phoenix, Arizona, from April 1, 1954, to December 29, 1989. For most of its run, it was broadcast in the morning, Monday through Friday, and usually live.
Can we infer the following?
The Wallace and Ladmo Show was the first big hit for KPHO-TV (Channel 5)

Select from the following.
[-] Yes;
[-] It's impossible to say;
[-] No;
The answer is:
It's impossible to say