Which of the following regular expressions denotes the set of all strings over the alphabet {0,1} that contains exactly one0.

a. (1+0)*01*

b. 1*01*

c. (1+0)*01*

d. 1*00*

e. 0

a b a, b, and d e All the above

Which of the following regular expressions denotes the set of all strings over the alphabet {0,1} that contains the substring010.

a. (1+0)*010(1+0)*

b. 0(1+0)* 1(1+0)* 0(1+0)*

c. (010)*

a b c All the above None of the above