Given a web application in which the request parameter product ID contains a product identifier.Which two EL expressions evaluate the value of the product ID?()
A、A. ${product ID}
B、B. ${param.productID}
C、C. ${params.productID}
D、D. ${params.productID[1]}
E、E. ${paramvalues.productID}
F、F. ${paramValues.productID[0]}
H、G. ${pageContext.request.productID}