According to the text, "Accumulator architectures such as MARIE, with $\_\_\_\_\_\_\_\_\_\_\_\_$ implicitly in the accumulator, minimize the internal complexity of the machine and allow for very short instructions".

Question $4$ options:

a$)$

two operands

b$)$

one operand

c$)$

operands on the top of the stack

d$)$

set of general registers