Please select the eligibility criteria that correspond to the clinical trial below.
Title: A School-based Education Programme to Reduce Salt Intake in Children and Their Families (School-EduSalt)
Brief Summary: The study is to test whether an education programme targeted at school children can lower salt intake in children and their families. In this study, the investigators will educate children on how to reduce salt intake, and the investigators will empower children by asking them to deliver the salt reduction message home to their families, particularly children need to persuade the person who does the cooking for the whole family to cut down on the amount of salt used during food preparations. The study will involve children aged about 11 years, and their parents and grandparents in Northern China.


Options:
A: Children

Inclusion Criteria:

* All children in Grade 5 of primary schools (age about 11 years) are eligible for the study.

Exclusion Criteria:

* Children who do not have lunch or dinner at their own home will be excluded.

Adult family members:

Inclusion Criteria:

* For each participating child, we will recruit two adult family members. All adult family members who share the same meals with the child are eligible for the study.

Exclusion Criteria:

* If more than two adults in one family agree to take part in the study, we will select two of them (i.e. one male and one female) in the order of grandparents, parents, uncles and aunties.
B: Inclusion Criteria:

* Seated systolic pressure 120-140 mmHg
* Seated diastolic pressure 70-90 mmHg.
* Normoglycemic (HbA1C \<5.7%)

Exclusion Criteria:

* Taking pharmacotherapy that alters peripheral vascular control
* Pregnancy
* Breastfeeding
* Females taking contraceptives (pills, patches, shots, etc.) or hormone replacement therapy
* Taking illicit and/or recreational drugs
* Use of nicotine containing-products (e.g. smoking, chewing tobacco, etc.)
* Known allergy to latex or investigative substances
C: Inclusion Criteria:

* Subjects aged 40 years and above

  * With systolic BP \<140 and diastolic \< 90 mmHg
  * Not receiving pharmacological antihypertensive medications

Exclusion Criteria:

* Subjects with following conditions would be excluded:

  * Diabetes mellitus (positive history of diabetes or fasting blood sugar ≥ 126 mg/dl)
  * Renal insufficiency (serum creatinine of 1.4 mg/dl or above)
  * Pregnant or lactating women
D: Inclusion Criteria:

Obese individuals

* Age 18-65 years
* Caucasian
* Waist circumference \> 102 cm (men)/\> 88 cm (women)

Lean individuals

* Age 18-65 years
* Caucasian
* Waist circumference \< 94 cm (men)/\< 80 cm (women)

Exclusion Criteria:

Obese/lean individuals

* Cardiovascular disease (stroke, coronary artery disease, peripheral vascular disease, congestive heart failure, cardiac shunts, cardiac surgery, pulmonary hypertension, cardiac arrhythmias, family history of cardiac arrhythmias or sudden cardiac death)
* Diabetes mellitus/impaired glucose metabolism (fasting glucose values \> 5.6 mmol/L
* Stage 3 hypertension (blood pressure \> 180/110 mm Hg)
* Unstable or severe pulmonary disease
* Unstable or severe thyroid disorders
* Inflammatory diseases
* Smoking
* Alcohol use \> 2 U/day (women)/\> 3 U/day (men)
* Use of antihypertensive, lipid-lowering or glucose-lowering medications
* Use of corticosteroids and regular use of NSAIDs
* eGFR\< 60 mL/min
* Impairment of hepatic function
* Pregnancy or lactation

Answer: A