The fourth option is correct.
See the attached image. The red cylinder represents a washer formed by the described revolution. Its volume is

so when we integrate, we take

150x4 is 600 volume for the answer
Answer: A) 5 x 1/2
Step-by-step explanation: 5 x 1/2 yields 2.5, which is also the answer to 5 / 2.
542(1+1/4)
542(4/4+1/4)
542(5/4)
677.5