Question:-
The program below uses six temporary variables a, b, c, d, e, f.

a = 1

b = 10

c = 20

d = a + b

e = c + d

f = c + e

b = c + e

e = b + f

d = 5 + e

return d + f

Assuming that all operations take their operands from registers, what is the
minimum number of registers needed to execute this program without spilling?
Option (A)
2
Option (B)
3
Option(C)
4
Option(D)
6
Correct Option:
()
question-answer-faq-2241