Comprehension Passage
Read the following paragraph carefully and answer the following five questions:
In a ninth standard class of 50 students, the teacher administered test to measure achievement of students in Physics and Chemistry, respectively. The mean and SD of the class for the achievement scores in Physics were 50 and 20 , respectively whereas, the mean and SD of the class for the achievement scores in Chemistry were 20 and 5 respectively.
One student Rekha scored 30 marks in Physics and 26 marks in Chemistry. Another student Reshma scored 56 marks in Physics and 22.5 marks in Chemistry. Another student Sameer scored 46 marks in Physics and 19 marks in Chemistry. The summary of these scores is given below:
| Subject | Mean of the class | SD of the class | Rekha | Reshma | Sameer |
| Physics | 50 | 20 | 30 | 56 | 46 |
| Chemistry | 20 | 5 | 26 | 22.5 | 19 |
Who had the poorest score on either test?
1
Rekha
2
Reshma
3
Sameer
4
Reshma and Sameer both