be correct for some cases):(5 points) Choose the best answers (more than one may B. 1. Which of the following are illegal identifiers? c, pears) darea% 2. Which of the following are incorrect C assignment statements? 3. The unary operator does which of the following functions? 4 The condition (valid) means 5. The assignment statement a-b+d simplifies to a. dogs2 b. cat number year- 1967; b.day 24 hours 12s complement b.1scomplement c' negative ofa numberd.modulo two a. invalid !-0) b. irevalid-0) c. if(valid0) d. if(!valid t-o) cyear days 365d.while- 32