Read the following premise and answer if the hypothesis is true.
Castle Wolfenstein is a stealth-based action-adventure shooter video game developed by Muse Software for the Apple II. It was first released in 1981 and later ported to MS-DOS, the Atari 8-bit family, and the Commodore 64. "Beyond Castle Wolfenstein" is its sequel.
Hypothesis: Castle Wolfenstein was released on Apple II six months before being released on Commodore 64.. Is the answer "Yes", "No", or "It's impossible to say"? Respond with only the answer and no additional text.
It's impossible to say
It's impossible to say.