If 4p=864^p=8^64p=86, then p is A6B9C4D2Answer: B. 9 Read Explanation: 4p=864^p=8^64p=86(22)p=(23)6(2^2)^p=(2^3)^6(22)p=(23)622p=2182^{2p}=2^{18}22p=2182p=182p=182p=18p=9p=9p=9 Read more in App