Why is the Arduino Mega more a viable solution when dealing with complex projects, than the Arduino UNO?

Higher SRAM on the Arduino Mega

More number of GPIO pins on the Arduino Mega

More flash memory on the Arduino Mega

Higher power rating on the Arduino Mega

Why is the Arduino Mega more a viable solution when dealing with compl

1.	Why is the Arduino Mega more a viable solution when dealing with complex projects, than the Arduino UNO?
A.	Higher SRAM on the Arduino Mega
B.	More number of GPIO pins on the Arduino Mega
C.	More flash memory on the Arduino Mega
D.	Higher power rating on the Arduino Mega
Answer» E.