Firstly, I wanna apologize to everyone that I using (sing Khmer)…Kal ti11 nh rean ot jes sos pel jol12 ng yk science tang del ot jes ey sos doysa mean b b yk science tang os knea so kor yk tam puk kort tea ot jes sombey tah limit Kor ot jes ey Kor ot jes del hz kor jab p’derm khom rean pi derm ch’nam ti12 hz kor p’long jub ng ke kron ot sov ban laor doj ke khom tang pi ti10 ti11 mk teh Anyway I got Only D guys for A2 muk. Finally I wanna tell all of you that no matter it science or socialism science it depends on you study hard or not it not about what you choose it about you guys so work hard if you don’t wanna hear (strong up) from someone.