Which of following statement is correct?

Abortion is the technique in which the foetus is removed from the uterus before the completion period of gestation. The medical termination of pregnancy (MTP) is considered as safe before 20 weeks of pregnancy. The first trimester is the time considered as safe for abortions. The second trimester starts from the 13th to 28th week of pregnancy. This is the period where the child develop organs and structures which are vital for life. The foetus is implanted deep in the uterus and the structure of placenta has been formed. The abortion is more dangerous in the second trimester compared to first trimester because there are chances if heavy bleeding and other complications after termination of pregnancy.