NaCl typecrystal (with coordination no. 6 : 6) can be converted into CsCl type crystal (with coordination no. 8 : 8) by applying

high temperature and high pressure

low temperature and low pressure

NaCl typecrystal (with coordination no. 6 : 6) can be converted into C

1.	NaCl typecrystal (with coordination no. 6 : 6) can be converted into CsCl type crystal (with coordination no. 8 : 8) by applying
A.	high temperature
B.	high pressure
C.	high temperature and high pressure
D.	low temperature and low pressure
Answer» C. high temperature and high pressure