given a cuestion 7) to 9): are all valid variable names Chose extended regular expression for given auto in question 7) Valid variable names contain letters, dipits or underse cores, but must begin with a letter E.g. Name. T. var 1, test/, test / are all valid variab A. [a-zA-Z_][a-zA-Z0-9]+ B [a-zA-Z][a-zA-Z0-9 1* C. [a-zA-Z][a-zA-Z0-9]. D. [a-zA-Z][a-zA-Z0-9]+ E. None of above 8) Positive numbers greater than or equal to 40 but less that E.13, 45, 40, 59 are matched positive numbers A. [4-6][0-9] B. [456][1-91 C. [4-5][0-9] [4-6](2) E. None of above 9) Words that start with "ba" and not contain 'o'. E.g, banana, balance, barrier A. [ba][ ] B. ba[*o0* C. b{ *p)* D. "ba["]" E. None of above Try.c mu #include int main(){ int i=1; /* for loop 1;/ for(;i