Hello, i'm making a survey and I need to insert in an answer the signs < or > (lower than or greather than) tried also using html code "&lt; &gt;"
The answers are
< 30 mg/dL
< 50 mg/dL
< 70 mg/dL
Being a scientifical survey I need to use the appropriate signs.
How can I solve? 
I'd prefer not to use the minus sign, that would be not corret.