You're probably looking for DHCP (Dynamic Host Configuration Protocol).
Answer:
00(01)*+|(01)*+101|00(01)*+101
Rest detail is in explanation.
Explanation:
(01)* means all the strings comprising of 0 and 1
when we add + the set includes empty sets as well. and for or we use union, and this can be done using the | sign.
And for concatenation, we have like 00(01)* etc. Hence, the above regular expression.
I think it is B because the + sign is saying that there is more than just guitars
Hope this is helpful :D
