Give the output of the query: SELECT MONTH("2010-03-05");
| List-I | List-II |
|---|---|
| (A) SUBSTR() | (II) To extract a substring from a string. |
| (B) TRIM() | (IV) To remove spaces from both sides of the string. |
| (C) INSTR() | (I) To find the position of a substring in a string. |
| (D) LEFT() | (III) To extract characters from the left side of the string. |
Given the following table:
| ENO | SALARY |
|---|---|
| A101 | 4000 |
| B109 | NULL |
| C508 | 6000 |
| A305 | 2000 |
State the output of the following query:
SELECT COUNT(SALARY) FROM EMPLOYEE;
Study the given molecular structure of double-stranded polynucleotide chain of DNA and answer the questions that follow. 
(a) How many phosphodiester bonds are present in the given double-stranded polynucleotide chain?
(b) How many base pairs are there in each helical turn of double helix structure of DNA? Also write the distance between a base pair in a helix.
(c) In addition to H-bonds, what confers additional stability to the helical structure of DNA?