Is a '61 Dodge Dart Phoenix considered an A body?

The Forward Look guys have been very helpful and connected me to the Darrell Davis books. Turns out these cars were poorly received during the '61/'62 model years and the HP gains from things like cross-ram and use of aluminum kept them alive until the '63 model year redesigns. The '61-63 413 learnings led to the 426 Wedge and Hemi so kinda cool.