Let transaction T1 has obtained a shared mode lock S on data item Q and transaction T2 has obtained an exclusive mode lock X on data item R Consider the following statement.I: T1 can read Q but cannot write Q.II. T2 can read R but cannot write R.Which of the above statements is / are valid?

Let transaction T1 has obtained a shared mode lock S on data item Q an

1.	Let transaction T1 has obtained a shared mode lock S on data item Q and transaction T2 has obtained an exclusive mode lock X on data item R Consider the following statement.I: T1 can read Q but cannot write Q.II. T2 can read R but cannot write R.Which of the above statements is / are valid?
A.	Only I
B.	Only II
C.	Both I and II
D.	Neither I nor II
Answer» B. Only II