please answer correctly

estion 2 The name of the follow compound is: t yet swered arked out of 0 Flag estion Select one: O a. (S)-2,3-dimethylpentane O b. (R)-3-methylhexane O c. (S)-3-methylheptane O d. (R)-3-methylheptane O e. (S)-3-methylhexane Of. (R)-2,3-dimethylpentane Question 3 112 lla Fing Not yet answered Which of the following structures has a plan of symmetry (achiral)? 1 2 3 4 Marked out of 5.00 Select one: 10 11 12 13 O a. P Flag question Finish attempt ... O b. O c. ing 12 - O d. nar